Thanks Drew
Got back from a 5 day vacation and found another rainbow had split. Apparently the key to making nems split in my tank is to leave town.
Had some concern just before I left since my Neptune auto feeder stopped working. Checked the log when I got back and it had started working the day after...odd.
I had been finally getting ahead of the hair algae in my tank, but since I opted to not do a water change just before vacation...and asked a couple people to feed the tank since I thought the feeder was still malfunctioning...it came back with a vengeance

. I'll have to continue with manual removal and frequent water changes to get ahead of it again. I'm trying to avoid running gfo but that may be an option depending on my PO4 levels.
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I found phosphates in my source water. As it turns out...the sediment filter on my RO that I had been purchasing from BRS was the 5 micron size and my DI resin was being overworked. TDS after the membrane with the 5 micron filter was as high as 12ppm, with the 1 micron filter it's down to 1ppm after the membrane. Hopefully the phosphates are being removed from the source water now...I'll have to test to make sure.