No. You will need to cycle your tank before adding fish. Read up on the nitrogen cycle, there is a sticky about it somewhere. You can do a fish or fishless cycle, but it is reccomended that you do fishless. If you are impatient, like me, you can buy bio-spira the same time you buy fish and add it to the tank for a quicker cycle. That is basically adding the bacteria needed to keep your ammonia and nitrite levels down.
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Current setups: 1800 gallon koi pond, 10 gallon planted, 150 gallon reef, other FOWLR tanks
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