Background Tanks 2 years old, light 350 par, 350 gyresx2 water changes bi weekly. my sps have started to get discoloration on tips, and ive had die off I haven't experienced ever. ive been calibrating my trident with Hannah checker which is showing my dkh at 8.5. my salifert kit shows 10.9dkh. tanks 165 gallon. im thinking salifert is right and this is burnt tips on pictures attached. fauna Marin icp was sent off and dosage of all traces corrected last month. 5 years of reef keeping and the more I try to rely on the complex systems the worse results im getting. anyone who may possibly have the years of experience to try and give guidance it would be much appreciated.


