Hi all R2R reefers, i start dosing AFR 2 month ago, during these 2 months,the PH always stay 8-8.15 day n night. 2 weeks ago i started using the ozonizer(125mg/H for only one hour a day) in my 135 total gallon reef, PH drop to 7.92-8.02 day n night since the day of ozonizer started... i unpluged the ozone last week, the PH went back to 8-8.13 day&night, due to blu & green slime algae i turn on ozone again yesterday but only let it on for 20 minuts a day, PH DRO again to 7.95-8.06. i have readed a direction of AFR,it says that:"All-For-Reef is a balanced source of calcium and carbonate hardness, released through natural biological processes". i doubt about the ozonizer killing or cut off the natural biological processes that AFR was rely on. thanks for watching and any helps will be strongly appreciate!