I looked at the contents of the Fertilizer and the dosing is pretty lean. I think the test for nitrate and phosphate might gives us an idea of what is wrong or what is missing. Don't focus on the algae. What we need is to get the plants going.
My 40B Ultra High Tech Setup - Updated 01/26
My Water Parameter/Nutrient level testing - N,P,K,Ca,Mg,Cu,Cl,Alk,NH4,Fe,Mn and S testing