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20 Gallon Fish Tank

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Before You Buy an Aquarium
Before purchasing an aquarium consider the needs of the fish that will live it, the care the aquarium will require, and the location where it will be kept.
Fish Aquarium and Tank Sizes and Characteristics, starting an aquarium, buying equipment, choosing tanks
This table is included in the shareware book FishBook , which teaches you the basics of choosing aquarium equipment and fish, breaking-in a new aquarium, and maintaining your aquarium.
Practical Pet Care Article: Fish Keeping 101 - Part 1: Buying Tanks & Accessories
What I'm going to go through is a brief explanation of what to buy when you buy your first aquarium. I'll try to dispel some common misconceptions and help you get more of what you want for your.
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See matches for 20 gallon fish tank in these categories
  1. On Sale - 82% Discount on Pyramid Foods 7-DayPyramid Foods 7-Day
    Pyramid Foods 7-Day
    3-day Pyramid Feeder Automatically feeds fish for a whole weekend. One pyramid feeds 15 to 20 average size fish in a 10 gallon tank. For fresh or saltwater fish. 1 pack of 4 pyramids. 7-day Pyramid Feeder Feeds 20 average size fish in a 10 gallon tan
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    In Stock

    $13.58

    $2.49
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    at Drs. Foster and Smith Pet Supplies
  2. On Sale - 82% Discount on Aquarium Pharmaceutical Pyramid 3 Day Mini FeederAquarium Pharmaceutical Pyramid 3 Day Mini Feeder
    Aquarium Pharmaceutical Pyramid 3 Day Mini Feeder
    You need to leave for a few days and need someone to feed your fish, but you either can't find anyone or can't trust anyone to be consistent. What do you do? The Aquarium Pharmaceutical Pyramid 3 Day Mini Feeder is the answer. Each pyramid releases
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    In Stock

    $13.73

    $2.47
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    at PetCareRx
  3. On Sale - 75% Discount on AquaClear Ammonia Remover for AquaClear 110AquaClear Ammonia Remover for AquaClear 110
    AquaClear Ammonia Remover for AquaClear 110
    This is an AquaClear Ammonia Remover Pack (A621) for the AquaClear 110 Power Aquarium Filter System (A620). The AquaClear ammonia removal pack is used if needed as the Stage 2 chemical filter media in the AquaClear 110 Aquarium Power Filter System i
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    In Stock

    $16.55

    $4.18
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    at Filters Fast
  4. On Sale - 74% Discount on 50/200 Media Foam 3 pk50/200 Media Foam 3 pk
    50/200 Media Foam 3 pk

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    AquaClear's unique CycleGuard protection is achieved by combining multiple inserts with the largest media volume available (over 6X greater than any comparable cartridge). Alternate replacement of inserts preserves sufficient bacteria populations to
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    In Stock

    $14.43

    $3.69
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    at Drs. Foster and Smith Pet Supplies
  5. AquaClear Ammonia Remover for AquaClear 50
    AquaClear Ammonia Remover for AquaClear 50

    Star FullStar FullStar FullStar FullStar Full

    This is an AquaClear Ammonia Remover Pack (A611) for the AquaClear 50 Power Aquarium Filter System (A610). The AquaClear ammonia removal pack is used if needed as the Stage 2 chemical filter media in the AquaClear 50 Aquarium Power Filter System ins
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    In Stock

    $1.99
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    at Filters Fast
  6. On Sale - 45% Discount on AquaClear 20 Aquarium Power Filter- 4.5"" length x 7"" width x 6.5"" heightAquaClear 20 Aquarium Power Filter- 4.5"" length x 7"" width x 6.5"" height
    AquaClear 20 Aquarium Power Filter- 4.5"" length x 7"" width x 6.5"" height
    The AquaClear 20 Power Filter provides mechanical chemical and biological filtration through its multi-stage filtration system for aquariums up to 20 gallons. The AquaClear 20 Power Filter media volume is up to 7 times larger than comparable filters. The unique design of the AquaClear 20 Power Filter allows the aquarium water to flow through like a natural and silent waterfall. The patented flow control feature allows you to regulate the water intake and flow allowing customized filter performance. The media ...
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    See prices for: AquaClear 20 Aquarium Power Filter- 4.5"" length x 7"" width x 6.5"" height

    15% Off All Orders use PFDBECO

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    $45.00

    $24.69
    See It
    at PetFoodDirect.com
  7. On Sale - 58% Discount on 70/300 Media Foam 3 pk70/300 Media Foam 3 pk
    70/300 Media Foam 3 pk

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    AquaClear's unique CycleGuard protection is achieved by combining multiple inserts with the largest media volume available (over 6X greater than any comparable cartridge). Alternate replacement of inserts preserves sufficient bacteria populations to
    Read More

    In Stock

    $16.73

    $6.99
    See It
    at Drs. Foster and Smith Pet Supplies
  8. On Sale - 11% Discount on All Glass Aquarium Ag Fluorescent Deluxe HoodAll Glass Aquarium Ag Fluorescent Deluxe Hood
    All Glass Aquarium Ag Fluorescent Deluxe Hood

    Star FullStar FullStar FullStar FullStar Full

    Our most popular hood is designed to perfectly compliment your All-Glass aquarium. It is custom fit to sit on the inside lip of the aquarium frame, which greatly reduces evaporation. They are designed to fit all major brands of aquariums. A full-len
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    See prices for: All Glass Aquarium Ag Fluorescent Deluxe Hood

    In Stock

    $66.11

    $58.99
    See It
    at PetCareRx
  9. On Sale - 74% Discount on AquaClear BioMax for AquaClear 50 Power FilterAquaClear BioMax for AquaClear 50 Power Filter
    AquaClear BioMax for AquaClear 50 Power Filter

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    This is a pack of AquaClear BioMax Filter Media (A1372) used as the Stage 3 biological filter insert in the AquaClear 50 Power Filter System (A610).

    In Stock

    $15.27

    $3.99
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    at Filters Fast
  10. On Sale - 60% Discount on AquaClear BioMax for AquaClear 110 Power FilterAquaClear BioMax for AquaClear 110 Power Filter
    AquaClear BioMax for AquaClear 110 Power Filter
    This is a pack of AquaClear BioMax Filter Media (A1374) used as the Stage 3 biological filter insert in the AquaClear 110 Power Filter System (A620).

    See prices for: AquaClear BioMax for AquaClear 110 Power Filter

    In Stock

    $20.00

    $7.99
    See It
    at Filters Fast
  11. On Sale - 8% Discount on All Glass Aquarium Ag Fluorescent Deluxe HoodAll Glass Aquarium Ag Fluorescent Deluxe Hood
    All Glass Aquarium Ag Fluorescent Deluxe Hood

    Star FullStar FullStar FullStar FullStar Full

    Our most popular hood is designed to perfectly compliment your All-Glass aquarium. It is custom fit to sit on the inside lip of the aquarium frame, which greatly reduces evaporation. They are designed to fit all major brands of aquariums. A full-len
    Read More

    In Stock

    $55.16

    $50.99
    See It
    at PetCareRx
  12. On Sale - 21% Discount on Perfecto Recessed Aquarium Hood 30in BlackPerfecto Recessed Aquarium Hood 30in Black
    Perfecto Recessed Aquarium Hood 30in Black

    Star FullStar FullStar FullStar FullStar Full

    Perfecto Recessed Full Aquarium Hood with Fluorescent Lighting Recessed hoods have an aluminum radiator that allows ballast to operate cooler, which increases the life of the unit. Please note this Perfecto Hood was made to fit Marineland aquariums. We cannot guarantee they will fit other brands. Fe
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    See prices for: Perfecto Recessed Aquarium Hood 30in Black

    In Stock

    $60.99

    $47.99
    See It
    at 1-800-PetSupplies.com
  13. On Sale - 79% Discount on AquaClear Ammonia Remover for AquaClear 70AquaClear Ammonia Remover for AquaClear 70
    AquaClear Ammonia Remover for AquaClear 70
    This is an AquaClear Ammonia Remover Pack (A616) for the AquaClear 70 Power Aquarium Filter System (A615). The AquaClear ammonia removal pack is used if needed as the Stage 2 chemical filter media in the AquaClear 70 Aquarium Power Filter System ins
    Read More

    In Stock

    $15.34

    $3.22
    See It
    at Filters Fast
  14. Ario 4 Colormix Aquarium Light 6Vol
    Ario 4 Colormix Aquarium Light 6Vol
    Designed To Set Beautiful Underwater Scenarios. Integrated Electronic Sequencer That Alternates Blue, Red And Green Top Quality Led Lights. Can Be Set Up With An Aquarium Decoration To Create Even More Unique Effects. For Up To 80 Gallons And 20
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    In Stock

    $28.54
    See It
    at Sears Marketplace
  15. 30/150 Media Carbon 3 pk
    AquaClear's unique CycleGuard protection is achieved by combining multiple inserts with the largest media volume available (over 6X greater than any comparable cartridge). Alternate replacement of inserts preserves sufficient bacteria populations to
    Read More

    In Stock

    $16.00

    $5.99
    See It
    at Drs. Foster and Smith Pet Supplies
  16. On Sale - 85% Discount on AquaClear Ammonia Remover for AquaClear 20AquaClear Ammonia Remover for AquaClear 20
    AquaClear Ammonia Remover for AquaClear 20
    This is an AquaClear Ammonia Remover Pack (A596) for the AquaClear 20 Power Aquarium Filter System (A595). The AquaClear ammonia removal pack is used if needed as the Stage 2 chemical filter media in the AquaClear 20 Aquarium Power Filter System ins
    Read More

    In Stock

    $13.52

    $1.99
    See It
    at Filters Fast
  17. On Sale - 34% Discount on Lee's Pet Products Lees Aquarium DividerLee's Pet Products Lees Aquarium Divider
    Lee's Pet Products Lees Aquarium Divider
    AQUARIUM DIVIDER 29 AND 55 GALLON Create separate compartment in your aquarium, separate aggressive fish, An exclusive breeding area. Fits most 29/55 gal. tanks Dimensions 12' x 18' Packaging Boxed AQUARIUM DIVIDER 20H GALLON Create separa
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    See prices for: Lee's Pet Products Lees Aquarium Divider

    In Stock

    $19.58

    $12.99
    See It
    at PetCareRx
  18. On Sale - 44% Discount on API Rena Smart Filter 20API Rena Smart Filter 20
    API Rena Smart Filter 20

    Star FullStar FullStar EmptyStar EmptyStar Empty

    API Rena SmartFilter Aquarium Power Filter The RENA SmartFilter is revolutionizing the power filter category by bringing the superior filtration of a canister filter to the back of the aquarium. The RENA SmartFilter offers unparalleled functionality, including unique pressurized filtration so water
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    See prices for: API Rena Smart Filter 20

    In Stock

    $50.99

    $28.79
    See It
    at 1-800-PetSupplies.com
  19. On Sale - 23% Discount on Marineland Half Moon Aquarium Kit, 20 galMarineland Half Moon Aquarium Kit, 20 gal
    Marineland Half Moon Aquarium Kit, 20 gal
    Marineland Half Moon Aquarium Kit, 20 gal Marineland Half Moon Aquarium Kit, 20 gal is an amazing 20 gallon bent glass aquarium with LED lighting. Comes with white and blue LED lights for day or night lighting with a shimmering effect. Half Moon Aquarium Kit does not include a filter.
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    See prices for: Marineland Half Moon Aquarium Kit, 20 gal

    In Stock

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    $159.81

    $122.93
    See It
    at VetDepot.com
    Trusted Merchant
  20. On Sale - 77% Discount on 30/150 Media Foam 3 pk30/150 Media Foam 3 pk
    30/150 Media Foam 3 pk
    AquaClear's unique CycleGuard protection is achieved by combining multiple inserts with the largest media volume available (over 6X greater than any comparable cartridge). Alternate replacement of inserts preserves sufficient bacteria populations to
    Read More

    In Stock

    $14.07

    $3.29
    See It
    at Drs. Foster and Smith Pet Supplies
  21. On Sale - 39% Discount on Cascade Internal Aquarium Filter 400Cascade Internal Aquarium Filter 400
    Cascade Internal Aquarium Filter 400
    The Penn Plax(R) Cascade Internal Aquarium Filters are completely submersible and provides crystal clear water making it perfect for any aquarium or partial fill amphibian tanks as well. The Cascade Internal Filters by Penn Plax(R) are proven to be reliable, quiet, easy to clean, and cost effective.
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    See prices for: Cascade Internal Aquarium Filter 400

    In Stock

    $36.95

    $22.49
    See It
    at 1-800-PetSupplies.com
  22. Aquarium Furniture 20L/29/37 Gallon Canopy
    Aquarium Furniture 20L/29/37 Gallon Canopy
    State-of-the-art aquarium stands & canopies Quality aquarium furniture with moisture-resistant, powder-coat finish Sturdy aquarium stands feature metal-to-metal locking cam assembly Quality aquarium furniture lets your aquarium get the attention it d
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    See prices for: Aquarium Furniture 20L/29/37 Gallon Canopy

    In Stock

    $51.99
    See It
    at Drs. Foster and Smith Pet Supplies
  23. On Sale - 34% Discount on AquaClear 50 Aquarium Power Filter- 4"" length x 9"" width x 8"" heightAquaClear 50 Aquarium Power Filter- 4"" length x 9"" width x 8"" height
    AquaClear 50 Aquarium Power Filter- 4"" length x 9"" width x 8"" height
    The AquaClear 50 Power Filter provides mechanical chemical and biological filtration through its multi-stage filtration system for aquariums between 20 and 50 gallons. The AquaClear 50 Power Filter media volume is up to 7 times larger than comparable filters. The unique design of the AquaClear 50 Power Filter allows the aquarium water to flow through like a natural and silent waterfall. The patented flow control feature allows you to regulate the water intake and flow allowing customized filter performance ...
    Read More

    15% Off All Orders use PFDBECO

    In Stock

    See item

    $56.00

    $36.99
    See It
    at PetFoodDirect.com
  24. On Sale - 23% Discount on Marineland Calypso Burlwood & Black Aquarium Stand, 20" x 18Marineland Calypso Burlwood & Black Aquarium Stand, 20" x 18
    Marineland Calypso Burlwood & Black Aquarium Stand, 20" x 18
    Marineland Calypso Burlwood & Black Aquarium Stand, 20" x 18" Marineland Calypso Burlwood & Black Aquarium Stand, 20" x 18" is a stylish aquarium stand for use with Marineland's 37 gallon column aquarium. Constructed to deliver dependable support and stability.
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    See prices for: Marineland Calypso Burlwood & Black Aquarium Stand, 20" x 18

    In Stock

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    $145.87

    $112.21
    See It
    at VetDepot.com
    Trusted Merchant
  25. On Sale - 8% Discount on Perfecto Replacement Strip Light 20in OakPerfecto Replacement Strip Light 20in Oak
    Perfecto Replacement Strip Light 20in Oak
    Perfecto Replacement Fluorescent Strip Light Replacement light fixture designed to work with Marineland Universal Fit or Recessed Full Hoods. Can also be used with glass or clear plastic canopies. Features: Made from high-impact polystyrene, making this durable and consumer friendly Textured surface
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    See prices for: Perfecto Replacement Strip Light 20in Oak

    In Stock

    $34.71

    $31.99
    See It
    at 1-800-PetSupplies.com
  26. BIO-Wheel LED Aquarium Kit 20 Gallon Kit (mfg# PFK20B)
    BIO-Wheel LED Aquarium Kit 20 Gallon Kit (mfg# PFK20B)
    Comprehensive kit boasts latest brand name components for set up ease AND aquarium success. Marineland BIO-Wheel LED Aquarium Kit saves you time and money by eliminating the need for product research. All the work is done for you! Each kit employs in
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    In Stock

    $129.99
    See It
    at Drs. Foster and Smith Pet Supplies
  27. Aquatic Fundamentals 10/20 Gallon Aquarium Stand with Shelf
    Aquatic Fundamentals 10/20 Gallon Aquarium Stand with Shelf
    Showcase your aquarium atop this durable stand. State-of-the-art aquarium features a powder finish for extra moisture resistance. Shelf adds the most affordable way to keep all of your aquarium essentials at an arms reach. State-of-the-art aquarium
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    In Stock

    $99.98
    See It
    at Sears Marketplace
  28. Perfecto Recessed Aquarium Hood 24in Black
    Perfecto Recessed Aquarium Hood 24in Black
    Perfecto Recessed Full Aquarium Hood with Fluorescent Lighting Recessed hoods have an aluminum radiator that allows ballast to operate cooler, which increases the life of the unit. Please note this Perfecto Hood was made to fit Marineland aquariums. We cannot guarantee they will fit other brands. Fe
    Read More

    See prices for: Perfecto Recessed Aquarium Hood 24in Black

    In Stock

    $39.99
    See It
    at 1-800-PetSupplies.com
  29. Aquarium Pharmaceuticals RENA SmartFilter 30 (Hang-on-Back Filter)
    Aquarium Pharmaceuticals RENA SmartFilter 30 (Hang-on-Back Filter)
    Features: Up to 30gals Three sizes available 10-20, 20-30 and 30-55 Gallons Mechanical, chemical and biological filtration from 4-sided cartridges (4X the cleaning power) with Bio-Chem Zorb Universal replacement cartridges one size fits all.
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    In Stock

    $34.99
    See It
    at MarineDepot.com
  30. On Sale - 22% Discount on Perfecto Recessed Aquarium Hood 24in OakPerfecto Recessed Aquarium Hood 24in Oak
    Perfecto Recessed Aquarium Hood 24in Oak
    Perfecto Recessed Full Aquarium Hood with Fluorescent Lighting Recessed hoods have an aluminum radiator that allows ballast to operate cooler, which increases the life of the unit. Please note this Perfecto Hood was made to fit Marineland aquariums. We cannot guarantee they will fit other brands. Fe
    Read More

    See prices for: Perfecto Recessed Aquarium Hood 24in Oak

    In Stock

    $50.99

    $39.99
    See It
    at 1-800-PetSupplies.com
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