tank is apprx 3 yrs old sand bed is apprx 2yrs old fair amnt of lps and sps but not enough to substantiate the kind of calcium consumption occuring versus the amt of addditives ie kalk ,aragamilk, kent two part ...ect I have tried just about every thing to bring my levels up but have had limited success. havent tested my nitrates for a while, high nitrates will drive down ph levels ...correct?
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