Unhappy Times (tons of pics)

Help, I don't know what the problem is. There are yellow spotted and partly dying leaves spread around the plants. I'm leaning towards magnesium deficiency. The tips are curling down as well. Here's the setup:

24/0 6500k CFL's
watered every 2-3 days (ph'd)
no nutrients in the last 15 days, before that nutrients for veg
the 4 large ones have been growing for about 40 days, the seedlings about 25 days

obviously they are growing very slowly

thank you



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maybe you water it too much. i wait till the leaves droop. that is the plant telling you it needs water. of course if you over water, the leaves droop too.

i think you probably don't have enough lights either for the amount of plant material you have. you need like 3 42 watt cfls for each plant after they get over like 10 inches in order to get good coverage. you can't grow large plants with cfls cause light penetration is limited. Go here CFL light proximity

Quantum;

I'm on my first grow and at 40 days my plants looked very similar. I have them under a 125w and a 105w 6500K CFL and they were being hand watered in hydro. Turns out overwatering was the culprit of the droopiness.

When I finished building my cabinet and popped them in there, I feel as if there was a big increase in growth under a 250w HPS. I don't know if it was strictly the light that gave the boost or everything else about the cab (better circulation, transplant to ebb and flow system, etc.), but it certainly didn't hurt.

Also, my plants have the same curling at the tips of the fan leaves as seen on you last picture. Can anyone tell us what that is?

Peace

FootballFirst said:

maybe you water it too much. i wait till the leaves droop. that is the plant telling you it needs water. of course if you over water, the leaves droop too.

i think you probably don't have enough lights either for the amount of plant material you have. you need like 3 42 watt cfls for each plant after they get over like 10 inches in order to get good coverage. you can't grow large plants with cfls cause light penetration is limited. Go here CFL light proximity

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I don't think I'm overwatering or overfeeding (now that I've gone 2 weeks with no nutrients) although I could be wrong. I don't wait until the leaves droop but I wait a few days until the soil is dry before watering.

as to the shortage of light, I agree with you. I'm planning on getting a 250-300w MH bulb and ballast - can anyone confirm that this is a good idea?

looks to me from the burnt bottom tips you had some slight nute burn, you cut out the nutes, and now they dont have enough or not enough light getting to the bottom. all very slight from what I can see. use 1/4-1/2 nutes with plenty of nitrogen. yes MH is the way to go for these babies. also, start that new MH high and let them get accustomed and than lower bit by bit. otherwise they look pretty healthy and you can expect these lower leaves to suffer those problems as the light capacity diminishes as they grow taller.

QuantumFizz said:

I don't think I'm overwatering or overfeeding (now that I've gone 2 weeks with no nutrients) although I could be wrong. I don't wait until the leaves droop but I wait a few days until the soil is dry before watering.

as to the shortage of light, I agree with you. I'm planning on getting a 250-300w MH bulb and ballast - can anyone confirm that this is a good idea?

Click to expand...

Why MH versus HPS? HPS is much more efficient in lumen/wattage. I don't know what are the other pros/cons though, I am a newb.

dr. herblover-the answer is light spectrum

dR. HerbLove said:

Why MH versus HPS? HPS is much more efficient in lumen/wattage. I don't know what are the other pros/cons though, I am a newb.

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this box is just for vegetative stage sorry I failed to indicate that