I have my GFO reactor on a timer, but somehow I messed up the timer and it just kept running thankfully I thought to test my phosphates (Hana) and I saw it at zero so I checked the timer and found out that my it reactor has been running for the last couple of days nonstop and I had just replenished the GFO. So my question is I have Neo phos, how do I know how much neo phos I should dose now that I'm at zero? of course I've turned off the reactor for now. it's about a 54 gallon system.
