Yellowing leaves

I have two beautiful plants a purple kush and haze extreme. Both doing great only small issues is it’s root bound in about the 7th week in the other room I have a northern lights and a banana puddintain both looking great. Other than the leave are starting to yellow on the outside. Any ideas same with the ones in flower. See in the pictures. Any suggestions? I use all spring water fox farm 50/50 mix with happy frog and ocean forest. I fed them last week for the last time I spray them every 3 hours with spring water. This is also my first time growing a plant and my second ones are on their way up. Temp sits at 89 with a 600w and 1000w HPS both on and 70/75 with lights off. Veg room is 80 woth lights on and 72 with lights off give or take. In arizona so it’s pretty dry weather we have lots of circulation going in and out. Idk what it could be maybe Deficiency?

Hello there, I think you need to drop your lights on temp some if possible.
Spraying your plants lightly sure but 3 times may be a bit much? LEDs require a higher operating temp due to the lack of ir ,stomata opening and closing for transpiration, blah blah blah lol but hps creates lots of ir, so the temps usually are run mid seventies when possible.
Ensure the lights on/off temps remain close, preferably not more than 5 degree drop. Rh will spike if cooler temps follow warmer temps. Cooler air cannot hold as much moisture, so it condensate on and between plant tissues....no bueno causes pm.
So, in summary, in my opinion op, lower temps, stop spraying so much, and watch for rh spikes.
Good luck.
FF

FastFreddi said:

Hello there, I think you need to drop your lights on temp some if possible.
Spraying your plants lightly sure but 3 times may be a bit much? LEDs require a higher operating temp due to the lack of ir ,stomata opening and closing for transpiration, blah blah blah lol but hps creates lots of ir, so the temps usually are run mid seventies when possible.
Ensure the lights on/off temps remain close, preferably not more than 5 degree drop. Rh will spike if cooler temps follow warmer temps. Cooler air cannot hold as much moisture, so it condensate on and between plant tissues....no bueno causes pm.
So, in summary, in my opinion op, lower temps, stop spraying so much, and watch for rh spikes.
Good luck.
FF

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All my lights are exhausted out I had three running until it started getting hot out here so we dropped it down I can adjust the dim but they are already on 50% it also could be nutrient burn because I just fed them a week from today and I haven’t fed them at all throughout this entire grow till now because they just started showing signs of needing it

I would say nutrient burn....the tips of the leaves yellowing are a sure sign....

Ausweed said:

I would say nutrient burn....the tips of the leaves yellowing are a sure sign....

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Okay I just put a top dressing of some terp tea and watered it in there for the las weeks of flowers i just started flush this weekend I haven’t fed them any nutes this entire grow till about a week ago when they really showed signs. They must not have liked it

Drpsychedelic said:

Okay I just put a top dressing of some terp tea and watered it in there for the las weeks of flowers i just started flush this weekend I haven’t fed them any nutes this entire grow till about a week ago when they really showed signs. They must not have liked it

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Maybe so; especially if you gave them that feed and noticed that change. All is well your near the end..Enjoy

Yeah, over fert. you shouldn't have to feed much if any if that soil mix. Just make sure the pots are big enough for an entire grow cycle. I'd stop spraying them too. Just make sure the soil has enough water since you live in a dry climate. Also, you really don't need to flush provided you don't over fert.