WTF sumthign isnt right... leaves curling dieing

I have one fluorescent shop light setup for 3 plants 1 started befor the others its in a 8ftx4ftx8ft room.I water them every other day feed twice a week on Monday.and Thursday.I have no idea what I did wrong the leaves are pointing down and at the tip of the leaves they are curling up and turning brown and sum of the leaves are yellow please help.Also I forgot to add the fluorescent lights are 2 3150 lumes a peace.Do I have to get better lights.

no clue .. Lack of light ? ? over water? someone here will know

looks like a phosphorous deficiency
GROWFAQ check out figure 12

I think you are over-watering AND over-feeding. Watering well every 3 or 4 days is better than a little too often. And feed every other watering, which would be once per week say. I think you will see a difference pretty quickly.

NOTE: Over-watering causes droopy leaves and if your roots are water-logged all the time they can't get enough oxygen and won't be able to take up nutrients properly. Hence over-watering can often result in the plant appearing nutrient deficient. Also too much nutes can look like not enough, so be careful not to over-react by feeding even more. Try what I said with the watering / feeding and see what happens. Hope this helps.

greenb.

what kind of nutrients are you using? also, what strength are you applying them? it looks like you have a combination of over-watering, over-fertilizing, and not enough light. two shop lights are not going to provide a sufficient amount of light intensity to successfully grow 3 full-sized, decent producing cannabis plants.

looks live over watering, how often are you watering it?

JohnnyPotSeed1969 said:

two shop lights are not going to provide a sufficient amount of light intensity to successfully grow 3 full-sized, decent producing cannabis plants.

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Very true.

JohnnyPotSeed1969 said:

what kind of nutrients are you using? also, what strength are you applying them? it looks like you have a combination of over-watering, over-fertilizing, and not enough light. two shop lights are not going to provide a sufficient amount of light intensity to successfully grow 3 full-sized, decent producing cannabis plants.

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Ok now you say "two shop lights are not going to provide a sufficient amount of light intensity." WHat would provide enough light what number of lumes would you use?

budo27292 said:

Ok now you say "two shop lights are not going to provide a sufficient amount of light intensity." WHat would provide enough light what number of lumes would you use?

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Scroll up and look at what i said it was, thats what it is! and you can click on the faq and see the exact same thing in figure 12

Your plant would have not grown that far if it were a light problem... You need very little light to keep your plants ALIVE... Optimal conditions are another story...

It looks like you have a nutrient def. or over feed... If you are sure you are not over doing the nuts you need to check your soil runoff PH if it is 7 or over your plants can not be able to uptake the nutrients available in the soil...