yellow spots on leaf

pengupot

Active Member
Some basic info on my grow:
Age of my plants are 14 weeks and are Sativa about 5ft tall
They are currently in Flower 12/12 (just started yesterday)
I'm using miracle-grow with a pH of ~5.5 with 6 month fert in it
Tap water is soft with a pH of ~6.8 and I water every 2 days or so using the finger test so I don’t over water.
Room temp is about 68-70 F with ceiling fan on slow
I have 1 250w heat lamp 2 100w bulb and 1 120w flood, both "Natural light", lights are about 2 ft away
Grow room is 15'X10’
I have had some issues with the leaves on 1 plant getting shrivaled and dry, but I have 2 others that have yellow spots on a few leaves andsome yello edges. Other than that, the grow seems to be going great. I am wondering if I am having a small problem with nut burn or pH. I also had 3 herms but I neutered them and they seem to be doing great. Any input would be appreciated.
 
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