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Originally Posted by dom
Saw the setup with nice root look alike wood there. Suspecting there are 2 main reason causing the PH high. First, your pipe water may in high PH level like 8-8.5. After injecting the CO2 and managed to lower down to PH7.6 2nd, your gravel might contained small shell or those coral sand which not suitable for planted tank.
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Sorry for interrupting this....Dom, u mentioned that gravel might contained ...blah blah (refer above quoted by Dom).....which not suitable for planted tank.... so can i put it this way...from observation, holland sand gravel also contains lots of crush shell la....would this be not suitable to use for planted tank also ??? correct me if i am wrong...
Regards ,
Gary