No probs, as ever, using BioBizz. Not used Alg-A-Mic before, nor CalMag for that matter and CalMag did not arrest a deficiency so, can't really attest to the efficacy of it. Fish-Mix I use 50/50 with grow up until flowering. Always been a great combo. NBot sure Alg-A-Mic added much but will give it the benefit of the doubt as it's the first time of use. I've always used Bloom and Top-Max and gave them a 5 rating the last times so, have to do the same again really.