Tropical fish for unheated tank

How to Set up a Healthy Goldfish Aquarium

  1. Select your tank. Many people choose to put their fish in bowls, but these simply don't have the capacity to let a goldfish thrive. If you can afford it, try to get at least a 20-gallon tank for your first goldfish, plus another 10 gallons for every new fish. The more space your fish have, the healthier they will be.


  2. Install a filtration system. Goldfish produce a lot of waste, so a good filter is necessary to keep them healthy. There are many types of filtration, but the most effective one is the bio-wheel filter that hangs on the side of the tank. Undergravel filters are only recommended if you're on a budget or if you're keeping sharpness-sensitive goldfish (such as the Bubble Eye). Canister filters are best for large tanks, as they are a more powerful version of the bio-wheel filters.
    • You want to provide double filtration for the tank in order to keep it as clean as possible. For example, if you have a 20-gallon tank, get a filter rated for 40 gallons or two filters rated for 20 gallons.
  3. Decide on a heating system if necessary. Most goldfish can function perfectly well in unheated water, but tropical fish may need it a little warmer. For all non-exotic goldfish, the tank temperature should be between 60°F and 72°F.
  4. Put in your gravel and decorations. These are somewhat superficial additions compared to the filtration and heating system, but even the smallest piece of scenery can brighten up the whole tank.
  5. Now fill your tank with water treated with water conditioner. Start up the filter and heater according to their directions. At this stage you can also add any live plants you have, but do NOT add your fish before running the system for a few days to make sure it works.
  6. Cycle your tank. This step is crucial to the health of your fish. If you want to be really thorough, you can add fish food and let it decompose in your aquarium, which will bring ammonia into the water and cause beneficial bacteria to grow.
  7. Test the water. Once your water tests 0 for ammonia and nitrite, but still has some amount of nitrate, you can add your goldfish.
  8. Add your fish to the tank slowly. Don't dump a bunch of goldfish into your tank all at once, as this might cause stress to the biological system of the tank. Only add one or two fish at a time, preferably with several weeks between each group.
  9. Do weekly water changes and check on your filter occasionally. So long as you preserve the tank's hygiene, you should have no problem keeping your fish healthy.
  • When adding your fish into a new tank, hold the bag in the tank for about 20 minutes before releasing them into the water. This helps their temperatures stabilize.
  • If you are going to use plants, make sure you choose hardy plants such as Java moss and Anacharis. Goldfish tend to nibble plants' leaves. Hardy plants are a very good idea, since they provide oxygen and small amounts of food for the goldfish.
  • Never put gravel in your tank which can stuck in your fish's throat. Pick gravel that is smaller or larger than your fish's throat.
  • Some types of goldfish are incompatible with other types. You should separate different species into four categories. Pond-hardy goldfish (common goldfish, shubunkin, comets), fancy goldfish (Orandas, black moors), extremely fancy goldfish (ranchu, egg fish, dorsal-less fish), etc. Pond hardy cannot be mixed with rare, fancy cannot be mixed with extremely fancy, etc. Find out the different types and only mix goldfish from their corresponding group.
  • Make sure to clean the tank regularly to prevent bacterial blossom.

Too many tanks?

by Rockymason

I have 16 tanks running here in Palmer.. is there a cure?
There are lots of tropical fish that "look" like sharks, but , of course are not.
Bala sharks for one...but they like to be in schools of at least 3. They can get to 18", though. I've had mine for 8 years and it is 8 to 9 inches now and is in a 90 gal tank with some african cichlids.

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Secret Caribbean Island Vacations  — Businessweek
These shipwrecks host some of the world's best diving, with stingrays and 100 species of tropical fish making their home in the skeletons of Spanish galleons and British warships.

tropical fish tank
tropical fish tank
60L Tropical fish tank
60L Tropical fish tank
20lbs of Aquascaping Seiryu Stone Rock Aquarium Tropical Fish Plant Shrimp Driftwood
Single Detail Page Misc ()
  • Natural, unique Look, many crevices and different textures
  • Good for decoration and use on a planted tank
  • The most popular stone that people use for aquascaping
  • Iwagumi layout
  • 20 LBS
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