tom... please clarify t5no or t5ho? i am going to assume HO for now as that is a very good amount of light... not too much, not too little.
i believe (lets see if i got this right now that tom's posting here) the biggest issue with ferts is bottlenecking there instead of light being your limiting factor. as-in decide how fast you want your plants to grow with your light level and then just provide enough ferts to be non-limiting with plenty enough STABLE co2 for your goals and you should be good... usually.
i would be hard pressed to think high phosphate levels would be causing algae even in a non-co2 setup unless phosphates were off the chart and/or there's a bottleneck or inconsistent co2 somehow (maybe lots of w/c's with fresh tap water, etc.).
i believe (lets see if i got this right now that tom's posting here) the biggest issue with ferts is bottlenecking there instead of light being your limiting factor. as-in decide how fast you want your plants to grow with your light level and then just provide enough ferts to be non-limiting with plenty enough STABLE co2 for your goals and you should be good... usually.
i would be hard pressed to think high phosphate levels would be causing algae even in a non-co2 setup unless phosphates were off the chart and/or there's a bottleneck or inconsistent co2 somehow (maybe lots of w/c's with fresh tap water, etc.).
