Tested nutrients last night.
NO3 8ppm
PO4 0.13ppm
Both need to come down by about half or a little more than half of what they are now. I'd like 2-4ppm NO3 and 0.04-0.08ppm PO4. I also understand that some "invisible" nutrients are in the algae.
Still fighting GHA. Changed up the H80 fuge light a bit. I dropped it to 6" instead of 8", increased the time to 24 hours instead of 18 and changed to the "bloom" spectrum instead of the "grow." It was suggested to me because of how much blue the H80 has in the grow spectrum. The bloom is supposed to be better for growth than grow. We shall see.
After the holidays I need to order ROX carbon, GFO and I'm gonna get some Blue + bulbs for the T5, the Actinic are nice for the UV spectrum the Kessils are weak in, but I think I want to mix it up with a bit more blue from the T5s.
My plan is I have able 6 months of use on my Actinics. From a little research on T5 bulbs, optimum life from an open uncooled fixture is in about 67°F ambient temperature. This cool room temp keeps up with the forced cooling fixtures for maintaining proper bulb temp for extended life.They last about 18 months or so this way. Since I keep my house at 70° year round, I'm going to run T5s for 12 months. All that explaining, I have 6 months on the actinic bulbs. I'll swap in 2 Blue + and run them for 6 months at which point I'll change out the Actinic that are still in the fixture for the Actinics I pulled out and run another 6 months. I will then have 12 months on all bulbs, and I'll replace them all at that point. Since my T5 are only 4 bulbs and used for supplemental lighting instead of the main punch, I should be ok changing them all at once.