Yeah, I have used reef roids here and there. I can incorporate that into feedings more regularly. I know it has worked to increase phosphates for me in the past.Reef roids! It will bring that po4 right up and make your corals super happy! I was having the same problem with 15 fish..neophos and Neo nitro was getting expensive dosed reef roids and some stump remover and my po4 and no3 shot up and my corals have never looked better!