Joey,
I'm glad you're having success. The coral look great. I've avoided Prodibio and similar products because of the very high cost, and I'm unconvinced about the effectiveness or necessity of some of the additives. For example, there's no data that anyone's ever published linking iodine and strontium supplementation to enhanced coral growth. I used to monitor I and Sr but found that a 10% monthly water change kept them within acceptable ranges, so I don't even test for them anymore. (that alone tells me they're not being heavily metabolized). I do add iron (along with the calcium, carbonate and magnesium) but only to stimulate growth of the chaetomorpha in my refugium... the chaeto and phosban keep my NO3 and PO4 at zero. I wonder how your algal growth problem would have done with just the phosban reactor.
Thanks for the pics.