PH keeps dropping

[sal713]

Why would cause my Ph to keep dropping? Everything else is normal. Would raising my calcium lower the Ph?

 

[rayraypico]

every so often you have to buff your tank. Everyone does this to keep their PH stable and above 8.1. If you buff your tank you need to by an alkalinity test kit and monitor your alkalinity. The more you buff the more you raise your alkalinity. Also your lighting will cause you PH to go up, but when your lights are off your PH will drop slowly this is normal