Drooping/yellowing leaves DWC

journalreader said:

Just wrapped them in electrical tape. I'll be picking up some black hose on the next run.

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Air hoses don't need to be light proof. The point where the airhose enters the pail may need a bit of tape over if it's at the top and directly exposed to light. Any line carrying nutrients like for RDWC needs to be light-proofed tho.

journalreader said:

I've been considering doing coco on the next grow, less worry about the res temps which is my biggest issue. Left plant has some yellowing on the bottom leaves. LOL the problems never end.

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Coco has it's own PITA needs tho so I stick to peat based soilless blends like the ProMix HP I've used for at least a decade. Sunshine #4 in the decade prior to that but it needs a lot of added perlite where HP has plenty enough for good drainage. HP stands for High Porosity.

Left plant has started to yellow on the bottom. Droops with lights off but upper leaves perk up when light is on. Did a res change for both on Wednesday. Been doing about 25ml h2o2 daily for 3.5 gallon res. Been chilling water to keep in low 70s high 60s as best i can. Neither water smells bad at all. I took pics of roots as well.



Heres the info..
Left:
.653 ec
5.8ph



Right:
.821 ec
5.85ph



Thx for input in advance! I think soil is my next run until i can control temps better in reservoirs.

Added an addiotnal 2.5ml of gro and micro last night thinking the left buckey may be needing more nutes. It doesnt seem to have helped, atleast overnight. Heres some closer pics of leaves on both.