bi monthly wc.. The last salinity check 2 wks ago is 1.025 ytd the reading iss 1.017. What contribute to the drop in salinity and yes. My rocks start to turn dark green.. well from white to dark green. no3 = 3 po4 = zero. some sps is suffering. kh around 7-8.
any idea what is happening. will zeovit reduce salinity or the GAC reduce it.
really too bz to take care of my tank and well... just surprised to see the drop in salinity using the electronic reader. (refractormeter loan to friend for the moment) n the difference between the 2 meter should not be that much of a diff.
pls advise. tia