My plants are in their second week of flower, and I go to check PH & PPM and I have a lot of white snot / slime floating in my rez. It appeared over night.
Last week [4-5 days ago] I noticed some on my pump filter. I threw it away and put a new filter on. I figured it may of had some organic stuff in it reacting to the h2o2 since it was used even though I soaked everything in h2o2 before using. I didn't think much of it after that until today. I assumed that the h2o2 would take care of it.
I'm running a sterile system with h2o2 added every 3 days and Canna Flora a & b nutes at 1400 ppm with city water at 500 ppm to start. Just a little under maximum to prevent nute burn.
Air temp is always just under or at 80f. This should be good since I have a constantly running 6" intake and exhaust, and the LA air is full of co2 [smog enrichment haha].
I keep my PH between 5.5 and 6.2. That had jumped up over night as well to 6.7 with the addition of the floating snot.
Rez is covered. No light getting in.
I run two foam filters. One on pump in rez, and another on tray to keep hydroton from getting in the supply line. This is flood & drain. The water when in the tray looks fine. No snot in tray. It must be staying in rez since it's only floating on top.
I'm going to try dumping and cleaning the rez, then doubling the amount of h2o2 for first application.
My google search only came up with organic solutions to the problem, and one guy who solved it with h2o2. Since I'm running a sterile system, any organic fix is out of the question. Just wishing it would go away is not an option, although, my google search came up with that as a solution on a couple occasions.
I'm thinking about dumping the system every three days for a while while using a slightly stronger h2o2 mix and a weaker nute ppm. Canna's too expensive to just dump it every three days at full strength, but I don't want the plants to go into shock either. They are all growing vigorously, strong, and healthy with good color, and leaf profile. They appear to be very happy plants!
Anybody running a sterile system have this problem before, and if so, how did you fix it?