Once again need some advice from the expert bros
Bought a PH monitor put probe in tank meter showed 7.7. Added Kent Marine KH buffer 3-4 teaspoons mixed with water. After added twice over 2 days it raise to 8.1. However, addded 3 more times (same dosage) but still at 8.1. Any bros know the reason?
Mine is 5x1.5x2 ft. Fish with corals. With a 3ft sump, H&S skimmer, Rowa phos, PureII and Polyfilters.