Need help figuring out whats wrong this plant

Zipz55 said:

just got a new pen and calibrated it

when i checked my old pen it was off by a full point so I've been feeding my plants with water ph'd in the 5.4-5.8 range instead of 6.4-6.8

gonna do a flush with correctly ph'd water when lights come today.Hopefully this fixes everything

thanks for the help

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Thats isnt enough. Microbes regulate the ph for the plant at the root surface. You have a microbe problem, as in not enough microbes. And you burnt up the plants with too much nutes. using a 240 watt light. and should of been feeding the plant about 1/4 strength recommended dosage with that light and the nutes accumulated and burnt them up.

I would flush the pots with 1 tsp per gal of epsom salt add microbes to the last amount you flush through, leave alone till the next feeding at 1/4 strength dosage just to finish them out and get some bud which wont be much with that light.

The plants pictured were overfed with nutes for over a month.

Use 1/2 to 1/3 manufacturer recommended dosage.

I'd defoliate all that damaged leaf, ALL OF IT.......Stop all nutes for a week, then use 1/2 recommended nutrient dosage