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Thanks for the input guys, I'm using AN nutrients, and AN PH up/Ph down. My system seems to 'want' to rest at 6.1 I've been reading that 5.5-5.8 is optimal. If it's hanging out at 6.1, should I just leave it, or should I adjust to 5.5, and allow it to fluctuate between 5.5-6.1?

Greetings all. I'm having trouble keeping my PH at all stable. Every morning, I bring the PH in my system down to 5.5, and when I test it at night, it has drifted up to 6.0-6.1. Left unchecked, the ph drifts upwards even higher into the 6.5-7.1 range. System in a nutshell is a GH waterfarm...

I just transplanted these purple urkle clones into my GH watergarden last weekend. Almost immediately, they started looking a little N deficient. PH was running a little high for the first two days (6.5'ish). Growroom is very small, 4'x1.5', average temp is around 80-85. Added some AN Sensi...