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\u00a9 2020 wikiHow, Inc. All rights reserved. $15 per petco trip. Some professionals believe that one goldfish needs 20 gallons to itself, which means even putting one fish in the so called 'beginner's' tanks they sell at pet stores is sentencing your fish to a short life of misery. You may want to trim rebar depending on length so it goes at least 2’ into ground below wood. Hammer rebar into holes down into ground. Silver Poet from the computer of a midwestern American writer on April 10, 2010: Thanks for writing this hub. As soon as the levels come back into a normal range, you can remove the absorbing pad. You're going to need to have a set of cleaning equipment that is only ever used for the fish, as even a tiny drop of detergent in an old sponge can get into the water and start whacking your fish like a silent assassin. How long after cleaning to start flushing the tank, I am on my way to pet store to get a pump and a topper. That is very good advice about the hospital tank. 1 part non-detergent bleach to every 9 parts water in a spray bottle. Algae is no joke (any fish-keeper will tell you that). Can we still get it clean enough to put our one fish in it? Both are highly toxic to fish and even a small amount of residue left over after cleaning can be deadly. Hi, DD won a beta fish at a fair. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Don't use ANY cleaning products. Tanks sealed with 100 percent silicone rubber are much less likely to leak. Be sure to use caution when scrapping with a razor blade. But let's say you've gotten your second hand tank, its nice and big, you're happy at the excellent deal you got for it, but now you want to wash it. When people find out you keep fish, they probably imagine a crusty, algae-coated tank where you can barely see anything swimming inside.