I also noticed that the coco took way longer to dry out when using LED. I'm actually using the same bossled brand panel as you, just the '600w' version. Another user commented that you're supposed to water coco every day. You are in fact supposed to FEED the coco itself every day, and if your medium is taking longer to start drying out (not that you should ever actually allow coco to go dry, as I'm sure everyone is aware of) then you need to feed LITTLE and OFTEN. We're not gonna go into coco cation exchange properties etc cos that's been covered waaaay too many times on here and there are probably thousands of threads in the archives about it. Bottom line is, to get the BEST results from your coco:
- Never let it fully dry out, keep moist, not saturated, with small regular feedings/watering
- Never flush coco with plain water without replacing the nutrients soon after, like a day maximum
- Never use coco without doing extensive research. It's NOTHING like soil, despite looking similar. If you fuck up or get poor results you'll blame it on the coco. You absolutely cannot say that because you did such and such growing in soil, that's what you should do in coco. Chalk and cheese, completely different.
I'm sure some will read this and say 'but I always feed only every few days or whatever. This means you did not read my post. To get the BEST results I said.
In my opinion.