When to test my po4 with my Hanna ULR checker. Results turned out to be 200ppb = 0.7ppm. That’s very high for SPS to thrive in. But I’m not surprised because from what I read online is that all new tanks with new rocks or gravel will typically give high po4 readings. In order to reduce my po4 readings I decided to use RowaPhos. I heard from my reefer friends saying that Rowaphos is really effective in reducing po4 so I decided to give it a try. Used an online calculator to calculate my dosing. It turns out to be around 420gram. That’s almost half of the bottle. I placed it in my torq reactor and give it a light rinse before running it. Let’s see how my po4 readings will be after 2-3 weeks time. Sent from my iPhone using Tapatalk