crushed coral vs. sand
i have recently been thinking of rescaping my tanks so i have been looking at alot pics of other tanks. everyone seems to have sand instead of crushed coral. i have crushed coral and i am almost tempted to switch to sand because it looks so much better. my tank has been set up for around a year and a half and i am in the process of changing from a fish only to a reef. what are the plus and minus' with sand? i am also having trouble keeping my ph @ 8.3. could this be the crushed coral? does it not buffer as well as sand?
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