Last time I have struggled with keep maitance PH to steady, end up low PH under 8.0, know that might have CO2 issued so I added air pump into sump and one outlet to skimmer to prdouces oxygen for bubbles
so far, pretty good number of PH until today I discovered that ALK is dropped to 7.7 DHK or 2.7 meg. the calcium is 390 ppm. Do I need to dose the raising carbonate to get ALK to up to 8.0
my guess?
1. I have some Coral that been grow. that I got rock from someone. I think I have 4 blue mushrrom, two already grows, two is baby. about 7 orange zoos, one is look alike green, glow during actinic, seems that green are starting grow alive.
2. that coral affect the parameter start to decreasing?
the parameter is
PH 8.3 to 8.4
ALK 7.7 DHK or 2.7 meg/l
calcium 390