The Planted Tank Forum - View Single Post - Am I missing a fert ?
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post #6 of (permalink) Old 12-23-2012, 10:23 PM
Diana
Planted Tank Guru
 
Join Date: Jan 2010
Location: Contra Costa CA
Posts: 11,538
There are a few fish (Cardinal Tetras for example) that cannot handle extra calcium, so I would find out if you need it at all. Plants and fish do take some calcium out of the water, it is a necessary mineral, and so is magnesium.

Can you get a water report from the company that supplies your tap water? Or will you be using RO for this tank?
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