| The only thing that a substrate will do in such a small tank is look good (which has quite a bit of merit in my book). In a 2.5, It shouldn't be tough to maintain water quality, I mean, a drinking glass is a 10% water change. I suppose if you have a fish in something that small you could run into trouble because of all that food.
Are you doing your weekly water changes? You're not, are you? You nutty reefer you. Thats my advice. NEVER skip your weekly water changes.
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Snail Whisperer
Member RSMC&RP
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