i wonder if you guys think bulk reef additives are even close to what name brand additives are,i will not mention name,i recently had problems with a 2 part +mag and couldnt for the life of me keep my parameters stable the other day everything started dropping horribly,started having problems with SPS badily im hoping that i caught it in time started back on the the additives i was using before brightwell A and B and mag-p.What i dont understand these bulk reef additive suppliers why arent they using the same ppm as all the others are they just to damn cheap are they out for the dollar.dont they understand thet all they are going to do is cause problems for us reefers.This is just my opinion i will never risk it again to save a couple dollars.