What are wrong with my BABIES ?? ( Weird Issues )

I am having multiple problems on my plants, but they seem to contradict each other. Some signs of overwatering seen, nutrient burn and low nutrients. I know, it is confusing. Please help. Here are some questions about my setup and what I am using.

1. 2 - 400w MH Bulbs - 6 Plants
2. Flood and Drain - small rockwool inside, hydroton outside
3. H & G - Aqua A & B , root exec and drip clean
4. PH 6.0 / Hannah meter / Bluelab shows EC 1.2 - 1.4
5. Used Tap water / Pre NUT water PPM 200 / 0.4 EC
6. Sleeping Temp - 73 - 80 / Daylight Temp - 77 - 88 ( i know it gets hot )
7. Humidity - 40 - 50
8. CFM exhaust 90cfm 4x4 tray , around 6 x 6 room
9. Strains - White Widow, Wonderwoman , NL # 9 and AK48
10. 3 weeks into Vegetating , started from Seeds.
11. Have not flushed at all, but started today for 3 days.
12. 4 x 4 tray, 290gph pump 3'x's a day at 12 min flood. It takes 12 mins to fill to flood cap.

I am really confused about the problems of these plants. Some signs are showing overwatering because during sleep hours the leaves droop very bad. When the lights are on the leaves do not droop as bad, but are noticeable. Bottom fan leaves are yellow while top are still green. This is usually a sign of not enough nutrients, but I have other leaves that show nutrient burn. I have posted some pictures and if anyone knows WTF is going on please let me know. My PH is always between 5.9 - 6.2 but usually stays at 6.0 consistently. EC always 1.2 and PH is always stable. From the reservoir and bluelab meter it shows that my plants are healthy. I have a good equilibrium of EC / PPM / PH . It does not change, it stays normal . If my PH was raising or my EC was lowering it would let me know, but those 2 numbers are not moving. I am so confused. I posted some pictures and I am open to suggestions or help. Please if you know , Share some <3

like you said, you know its hot, increase ventilation. sounds like an awsome rig you got going

I don't see and nute burn bro - looks like over-watering has caused an N lockout. I'd try a good flushing with PHed water for a day or two then give them some a good dose of Veg Nutes.

thatdjsnow said:

I don't see and nute burn bro - looks like over-watering has caused an N lockout. I'd try a good flushing with PHed water for a day or two then give them some a good dose of Veg Nutes.

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I was currently feeding 3x's a day 4 x 4 tray - 290gph pump, 35gallond reservoir for 12 mins with pump on and drain. The thing that is confusing me is that hydroton should be watered more often than that. I have heard some people watering every 3 hours with hydroton at 15 min intervals. I am at every 6 hours at 12 min intervals. This is what giving me conflicts on whether thinking my problem really arises from overwatering. Some symptoms show nutrient burn, but other leaves show none. It might be overwatering causing a N lockout, but is 3x's a day at 12 min intervals to much? I have recently cut down my watering to 2x's a day at 9 min intervals. Is that to less now?

thatdjsnow said:

I don't see and nute burn bro - looks like over-watering has caused an N lockout. I'd try a good flushing with PHed water for a day or two then give them some a good dose of Veg Nutes.

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Thanks for the advice. Getting more ventilation is a little harder said than done, due to the setup. Long story. I know air flow is basically 30% of growing, but the first 2 weeks of veg they were doing good. Usually ppm/ec should raise weekly to reach max potential, should I lower ppm/ec to compensate for more heat?

llebz0rs said:

Thanks for the advice. Getting more ventilation is a little harder said than done, due to the setup. Long story. I know air flow is basically 30% of growing, but the first 2 weeks of veg they were doing good. Usually ppm/ec should raise weekly to reach max potential, should I lower ppm/ec to compensate for more heat?

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You cannot compensate for excessive heat by adjusting nutes.

increase the fans and lower your daylight temp by 5 degrees and keep night the same. check your hydro feed and the ph it states the nutes are available to the plants. is your area hard or soft water as your hydro feed should reflect this. both are right about Nitro def and light burn but seen as the other plants are healthy i doubt it the nute problem as for lights you,d see more over all of them than just a selection. best test is try heat then lower the nute strength or use a micro nutrient if your not

Try lowering your PH to 5.7 - 5.8. I grow in hydro and never let it pass 6.0. Im not saying that is your problem as you say its on 6.0 constantly anyway. Nutes maybe abit to strong for some of your plants thats why its showing signs of nute burn on some of them, 1.2 EC dosnt seem that high tho for plants 3 wk into veg tho.

How many of them are like it ? Are you sure you havnt spilt anything on it ?

NLXSK1 said:

You cannot compensate for excessive heat by adjusting nutes.

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You cant compensate. But it will help reduce the chance of burn at the higher temps.

I think they look pretty good. Plants sometimes droop at night. Especially after the sun goes down on a hot day. They want to relax just like the rest of us. And those net cups in a flood and drain table. Sooner or later the roots are going to become exposed to the light. Sooner than later. Your gonna need to address that.

cowboylogic said:

I think they look pretty good. Plants sometimes droop at night. Especially after the sun goes down on a hot day. They want to relax just like the rest of us. And those net cups in a flood and drain table. Sooner or later the roots are going to become exposed to the light. Sooner than later. Your gonna need to address that.

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Next week I am going to be filling the flood table with hydroton. I was hoping that by lowering the nutrients I could put less stress on the plants due to the fact that I have to much heat. thanks for the advice. I am currently flushing right now , do you think I should continue or stop flushing?

sickshot said:

Try lowering your PH to 5.7 - 5.8. I grow in hydro and never let it pass 6.0. Im not saying that is your problem as you say its on 6.0 constantly anyway. Nutes maybe abit to strong for some of your plants thats why its showing signs of nute burn on some of them, 1.2 EC dosnt seem that high tho for plants 3 wk into veg tho.

How many of them are like it ? Are you sure you havnt spilt anything on it ?

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Every single plant is starting to show signs of burn. The bottom fan leaves are turning yellow already. New growth looks fine, nice and green. When you say split, what do you mean?

llebz0rs said:

Every single plant is starting to show signs of burn. The bottom fan leaves are turning yellow already. New growth looks fine, nice and green. When you say split, what do you mean?

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Spilt, As in spilt water on them that has nutes mixed into it ? How accurate is your PH meter ?

northern007 said:

increase the fans and lower your daylight temp by 5 degrees and keep night the same. check your hydro feed and the ph it states the nutes are available to the plants. is your area hard or soft water as your hydro feed should reflect this. both are right about Nitro def and light burn but seen as the other plants are healthy i doubt it the nute problem as for lights you,d see more over all of them than just a selection. best test is try heat then lower the nute strength or use a micro nutrient if your not

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I am in Los Angeles, so hard or soft water I'm not to sure. I do use TAP but let it sit for about 3 days before using it. EC is around 0.4 when I use it. Since my EC starts at 0.4 and my EC is 1.2 wouldn't my EC only be 0.8 and would that still be strong for Nutrient strength?

sickshot said:

Spilt, As in spilt water on them that has nutes mixed into it ? How accurate is your PH meter ?

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PH meter is very accurate. I calibrate every time before I use it with 7.0 solution. I usually check ph , then mix the nutes stir then check PH and then adjust PH to 6.0 then add boosters.

llebz0rs said:

I am in Los Angeles, so hard or soft water I'm not to sure. I do use TAP but let it sit for about 3 days before using it. EC is around 0.4 when I use it. Since my EC starts at 0.4 and my EC is 1.2 wouldn't my EC only be 0.8 and would that still be strong for Nutrient strength?

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0.8 EC isnt strong for plants that are 3 wks into veg. Where they grown from seed ? If so how many wks do u think they roughly are ?

sickshot said:

0.8 EC isnt strong for plants that are 3 wks into veg. Where they grown from seed ? If so how many wks do u think they roughly are ?

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Started from seeds Germinating on 5/15 - transplant to hydroton 5/25 (strated veg 5/25)

llebz0rs said:

PH meter is very accurate. I calibrate every time before I use it with 7.0 solution. I usually check ph , then mix the nutes stir then check PH and then adjust PH to 6.0 then add boosters.

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Try lowering you PH mate 5.7 - 5.8. Im stuck tbh mate, From what you have said i cant see it being nute burn, Light burn etc, I can only really see it being nute lock out.

sickshot said:

Try lowering you PH mate 5.7 - 5.8. Im stuck tbh mate, From what you have said i cant see it being nute burn, Light burn etc, I can only really see it being nute lock out.

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Thanks for your help. I will do that.

llebz0rs said:

Started from seeds Germinating on 5/15 - transplant to hydroton 5/25 (strated veg 5/25)

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So there just a little over 3 wks old ? If there only 3 wks old then its possible they could be getting burnt by the nutes, My plants are 3 wks old (in hydro) and iv only just started them on light nutes 5 days ago with a EC of 0.8 ( comes out the tap at 0.4)