Leaves dying please help!

I have been growing my plants in a a hydroponic ebb and flow system for about 3 months (there still in the vegetative state) and recently the lower leaves started to shrivel and fall off. The leaves arent turning yellow or anything there just seem to be wilting and falling off. The upper leaves are now getting these spots and they have what looks like a whiteish stain on them.(see the purple photo) My humidity is around 65% and my indoor temp is in the mid to high 70's. My ph stays around 6ish and recently the ph has been dropping quickly but it seems to have stopped now. Can anyone help me?

humidity is way to high for one and you might have a nute problem

Nute problems will always affect the lower leaves first, so I definitely agree with ace. Do a quick flush on at least one and them to confirm the prognosis.

DaBull said:

Nute problems will always affect the lower leaves first, so I definitely agree with ace. Do a quick flush on at least one and them to confirm the prognosis.

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That is just not true! If you add too much nutes and burn your plant, you will without a doubt see it on your new leaves first.

It looks to me like you have salt build up and that's causing a micronutrient lockout (lock-up/whatever), so the other guys are right about flushing.

What's up with that purple color? Are you growing your plant with an led light by any chance? If so, you don't need quite as much nutes when you grow with leds. Also, the penetration with leds isn't as good as HID, so it's a bad idea to grow a big plant with an led light. Keep them small and do sog. But if you're not growing with an led light, I just wasted my time talking about it...

Why do you have your pH at around 6 when you're growing in Hydroton? It's best to keep it at 5.8. But this leads me to my next question-what nutes are you using and how much are you giving your plant?

What is your water circulation like? looks like you got mold too

acexxacer said:

humidity is way to high for one and you might have a nute problem

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Sorry but that's not true either. For the veg state the humidity should be around 60-70%, or at least that's what it says in the two different marijuana growing books that I have. It's too high for flowering (40-60), but he's still in the veg state. You might want to double check your info before you go giving other people the wrong advice.

PuffTheDragon said:

I have been growing my plants in a a hydroponic ebb and flow system for about 3 months (there still in the vegetative state) and recently the lower leaves started to shrivel and fall off. The leaves arent turning yellow or anything there just seem to be wilting and falling off. The upper leaves are now getting these spots and they have what looks like a whiteish stain on them.(see the purple photo) My humidity is around 65% and my indoor temp is in the mid to high 70's. My ph stays around 6ish and recently the ph has been dropping quickly but it seems to have stopped now. Can anyone help me?

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Ok, got a couple of questions

1 - what is your feeding schedule?
2 - what nutes are you using?
3 - what is your PPM of the water that you are using before you add nutes?
4 - do you smell chlorine or sulphur really strong when you get a glass of water for yourself?
5 - during the last 3 months have you ever changed your tank completely out?
6 - what type of light are you using?

i replace the water every week and i use store bought spring water. Im following the feeding schedule on the back of the General Hydroponics bottles and yes i am useing an LED light.

PuffTheDragon said:

i replace the water every week and i use store bought spring water. Im following the feeding schedule on the back of the General Hydroponics bottles and yes i am useing an LED light.

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I would run just water bro and flip it to 12/12. the plants might just be saying piss off cause you been on 24 for 90 days.

What is your PPM at? Do you have good ventilation?

Like I said before-when you grow with leds the penetration isn't very good. Also, your plants tend to use less nutes than they would with a HID light. Flush your plants and begin to flower. I'm not familiar with GH, but I would only use half of what they recommend, because you're using an led light. What type of led light are you using?

Also, why in the world are you using spring water and not distilled water (like you should be using)?

please help my babys dying she's 4 months old and i think shes a=starting to flower but along one side she's started to wilt and shrivel basicly looks dead does anyone no if there's anythink i can do its heartbreaking to watch ... xxx