70 gallon cylindrical tank
1 med yellow tang
Sump by my reef creations
Calcium HIGH off the charts
Phosphates 143.2 also HIGH
I have taken out 15 gallons every two weeks using RO
water. I do not add trace elements, only the salt mix. Lights are turned off and on each day by hand because the timer that they have never works right and was always on. Its in a dental office and they are not there on weekends so they fend for themselves.
Is it ok for the calcium to be high?
How does one lower phosphates?