The Planted Tank Forum - View Single Post - big brown block!
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post #4 of (permalink) Old 01-13-2013, 01:35 AM
Planted Member
Join Date: Apr 2010
Location: Austin, TX
Posts: 290
You need more sand. I have like 1.5 to 2 inch cap on mine. 30 gallon. Didn't have much problems. I have one 2.5 gallon that I didn't put enough sand in, and it got all brown for about a week. I had to dump it and cap with about an inch.

Also, soil takes a lot of patience. Once plants get going they will go, but don't expect an immediate response.
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