tank capacity - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 07-21-2011, 03:52 PM Thread Starter
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tank capacity

I have heard that the general rule of thumb for tank capacity is 2 gallons of water for every inch of fish, and I was wondering if that was true because if so that severely limits anything I would be able to do.
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post #2 of 3 Old 07-21-2011, 04:05 PM
There is no straight forward way of stocking. For most beginners it is suggested 1" of fish per gallon, but this is a very vague rule. Every fish has a minimum tank recommendation that should be followed. I would suggest posting what size tank you have, dimensions, and what fish you are interested in then we can go from there. How you stock determines how the fish tank runs. The higher your bioload the less stable the tank is going to be, it will require more time to care for, and is more likely to suffer problems.

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post #3 of 3 Old 07-21-2011, 07:53 PM
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I agree.

And, welcome to Tropical Fish Keeping forum. Nice to have you with us.

And, we have fish profiles, second tab from the left in the blue bar across the top; each fish profile gives minimum tank size for that fish in the recommended numbers [this has to be remembered, shoaling fish need to be in groups, when selecting fish] along with data on water parameters, compatibility, etc.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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tank capacity

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