Dr.Dankz
- 331
- 43
I think you need a bigger cooling fan for those lights. You should be down closer to 12-14 inches your plants look like they are shooting up toward the light really fast big spacing on your nodes. They look to be pretty indica dom which should give you fairly tight dense plants. Also with this much distance you have lost 75% of your light density and lumens before its touching your plants at all.
Are you running CO2? If not your temps seem a bit high to me ideally your looking for 74-76 with an RH below 58% but above 42%. They yellowing you are getting looks like humidity burn to me. When your plants transpire into a to humid environment they build little puddles of moisture on the leaves around them when the bright hps hits these water droplets you get burns like the ones I am seeing. One last thing for your consideration. With a day time high temp of 81 your night time low of 68 is to low is there a purpose in dropping the temps that far at night I used to do the same thing I noticed my plants took longer to wake up to the sunshine. Your plants would prefer a temp change of 5-8 degrees at night for most of your flower cycle your not hurting them now but you are slowing them down. If you are trying to increase likelihood of coloring in the plants you need to drop the temps in the root zone more than anything else but not until the final 2-3 weeks for most strains. Just my observations. I hope it offers some help.
