Sand and flourite problem - The Planted Tank Forum
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post #1 of 1 (permalink) Old 02-10-2010, 01:06 AM Thread Starter
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Sand and flourite problem

Hi all

I had trouble with my sand substrate a little while back, i used flourite and on top sand, but started to develop anaerobic gas pockets, so i started siphoning out all the sand, but i left sand on the very botton of the substrate, and i'm seeing black spots on the under-glass of the tank, should i remove everything and clean it up, or should i leave like that? would i have any problems in the future?

el_heb is offline  

anaerobic gas pocket, sand

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