[quote=Help_Needed;2113051Lots of bubbles are good. As long as everything was new then it's probably not some sort of contamination. Are you using hydrotron, or something else?[/quote]
Yeah, germinated in 1.5" rockwool cubes, then put in 6" net pots filled w/ well-rinsed Hydroton.
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Otherwise, I'd double check the calibration of your pH meter and your TDS, just to be sure you're not having problems from faulty equipment.
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Yeah, I had thought of that, but the fact that it's been sort of a cyclical thing makes me think it's ok... It's pretty predictable, it all looks good for a week and then starts to go nuts. If I mix up a new batch, everything reads fine on my meters. The cloudy nutes happens around the same time that the PPM starts going nuts. I did add H2O2 this time (3ml/gal of 35%) hoping to combat it but it didn't stop or slow down the PPM climb.
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Also, what are your res temps looking like?
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Room varies from 60-75 deg F and the res has been 65-70 deg F for the last month...
I don't know if this has anything to do with it, I have a separate 2 gal bucket and a pump that I use to recirculate. I do this for convenience. I run the pump for a few minutes and check pH/TDS in the little bucket so I don't have to disturb the plant. I had 3 buckets originally but 2 plants turned out to be males so now there's only 1 5-gal bucket connected to the 2 gal "access bucket".
After this time I think I'm going to play with an Ebb/Flow tray... I'm just not crazy about DWC so far, I feel like my plant is constantly going between doing really well and on the verge of dying...maybe I'm just overreacting...