Hi,
This is only my second run doing hydro with an ebb and flow table and 6 inch Rockwell cubes. My first run went amazing during the winter, but this run has been off to a bad start. I’m pretty sure my res was too hot around 72-74 degrees so just installed a chiller. I’m flooding the table every 4 hours now with water around 67 degrees ppm around 450 PAR reading around 400. Lights are running 18/6 and RH is approximately 60. My plants look horrible! Please comment and any advice would be helpful to this new hydro grower. Btw, well rooted clones put in 6 inch cubes just over 2 weeks ago. Also, I’m using floraflex nutes and power SI along with hydro guard
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To me IMO, they look a little over watered and maybe to much light or the intensity may need to be dialed back.
I’m not familiar with that nute brand. Let’s see what @Myfriendis410 @dbrn32 @Covertgrower @peachfuzz has to say.
Good luck! 
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I second spyonyou opinion. I would definitely dial the lights back. Some of the lower leaves are light burn possibly.
Was there a different schedule awhile back for flooding?
Increase or decrease?
They do look overwatered, but it could be from the lack of air to the roots, until you get more roots not in the rock wool.
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Makes me wonder if maybe table isn’t draining well?
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I will take a look into that and maybe cut it back to water every six hours till more mature. The first time seemed so easy. Only thing I did differently was soak cubes in huge tote first time and wash coco matting in bathtub. This time I did all that in the flood tables
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Just thinking that droopy plants usually from lack of oxygen. Could just as easily be not flooding enough, even though seems like you are reasonable there. Are you running air stones on your res?
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Yes six of the largest air stones made with industrial pump in a 40 gal res
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Got me then. Have they started doing better since adding chiller?
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