I have a friend that has a Innovative Marine 40 gallon aquarium that cant seem to hold a pH of 8.0. I have tried every thing that i can think of and need some help figuring this out. I have Kalkwesser in the Auto top off and this keeps the pH around 7.6-7.8 I have also added a Co2 scrubber on to there tunze 9004 dc Skimmer. They have a small refugium that is running constantly. She dose water changes weekly with tropic Marin pro reef salt mixed in 0 tds rodi water. There is about 30 lbs of real reef rock in the tank as well as 30lbs of live sand. any idea or help you guys might have would be wonderful.
Oh and i have calibrated There apex pH probe with in the last 30 days. I also checked it against my Hanna pH pen. And Ph appears to be accurate.
Oh and i have calibrated There apex pH probe with in the last 30 days. I also checked it against my Hanna pH pen. And Ph appears to be accurate.