I just bought another pack of CSM+B (micros) from GLA. However, I won't be mixing it until this summer when my old solution runs out. I may have mentioned this before, but when I started using PPS-Pro back in 2013, the micro dosage was 1 mL per 10 gallons. I'm still dosing 2 mL in my 20g tank. No symptoms of toxicity in the flora or fauna to speak of. Yes, I do get BBA and this annoying algae on the carpet plants. I will need to read up on micro dosage changes before I mix up the next solution.
OP - I'm wondering if what you are seeing is from too much light and not enough CO2. You could decrease the number of hours even more. The emperors might be gassing out the CO2 with their biowheels. What colors are you seeing with the drop checker?