plant foliage yellowing after HPS installation!

TyPo

Well-Known Member
like I said in other posts, I just bought an 400w HPS system and I have gone from 70-85degrees with my four CFL's....to 90-96degrees with my new HPS. the pic is of the more-bottom leaves. they are lots and lots and lots of very very tiny yellow spots. I was wondering if the shift from CFL to HPS lighting and especially temp has caused the yellowing. also, one of the leaves on the bottom almost seemes like its getting really glossy (reflective). This temp problem is pissing me off, I bought two more fans, now I got holes everywhere in my box and I now need to worry about odor control more than ever. I went from two to four fans in different spots! I havent installed the fourth big fan yet that will blow outward, but I hope to god that the heat drops some. Im really not looking forward to purchasing a high-quality fan but it might have to happen.

within the last two hours of editing this post, I moved the HPS even closer to about one foot away and the plants immediatly responded by spreading thier canopy towards the light so now I know that they want to be close to the light. But when people say do the hand test (if you feel uncomfortable putting your hand under the light for a second then your plants will be uncomfortable) ..shoot..hell ya its uncomfortable, its like a dang sana.

But yeah, basically im just asking for confirmation or watever you guys think might be causing the yellowing. also, how you think I can fix it.
 

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