You have to consider running them at the proper height. My Cobs are ran less than a ft away in some places meaning a higher PPF than normal in some spots. You can't do that with HPS and definitely not DE HPS. Once the photos are back up take a look at the measurements and layout of the lights I'm using. It makes sense I promise it's all simple light physics.
That all will depend on what you want, next run will be all the exact same genetics and will be awesome. Same side by side all Veged under the same light for the same time. Pineapple Express
Nice setup brother, I have some Pineapple Express sends Im about to run next round.
4000K Cree CXB3590
I would be careful with humidity that high when you are flowering, you are risking bud rot and powdery mildew, 40-60% is optimal for flowering in my opinion. The reason the hand under the hps is hotter is because the inferred light. LED's heat comes out their heat sinks. Sweet video by the way , happy growing / harvesting.
VPD is why. Look at the chart its important to be in that green area. 70-75% is where it should be with lights on.. when the lights are off it drops to 50%.
I would be careful with high humidity that far into flower, from personal experience it is risking mold infestation, 40-60% is optimal for not having mold, VPD varies depending on plant size and location of grow (altitude is a factor i live at 6500 feet) . I also think that chart is for vegetating plants and not flowering plants as well and also i do not believe that chart is for cannabis.
Check out medicropper, he runs it higher
What works for one might not work for another , where i live PM is a serious problem, running RH that high invites problems.
I agree completely with ^
I suppose this is for the perfect environment. So that's fair. Completely sealed and sterilized is different than having a fan
I keep my RH between 50-58 during veg and 40-50 during flowering first month or so then I drop low as I can, one way I control my RH is by trimming my plants, if the room is small and there's a lot of big plants RH becomes an issue to control, unless you buy a big commercial dehumidifier, the regular 70-90 pints Cant keep up without pruning the big fan leaves.
