QUOTE(throx @ Mar 27 2011, 01:00 AM)
A few people manage to keep RCS and CRS in one tank but I think only for low grade CRS. RCS requires slightly alkaline water while CRS requires slightly acidic water. I tried before putting S grade CRS into my RCS tank and all CRS died within 2-3 weeks. 
RCS need alkaline water?if my memory served me well, my RCS doin very well in acidic water, with pH around 6 ~6.5 (in planted tank)
Mar 29 2011, 08:15 AM

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