tips curling & burn

can't diagnose my problem. any ideas?

im getting a lot of yellowing, on newer leaves

also threw in a picture of some blackberry kush i got from the club for eye candy

january 16th, picked up 6 shiva skunk, kept all 6 in closed cardboard box for about 12 hours,

january 17th, then, with foxfarm OF, transplanted from 2 gallon to 5 gallon home depot buckets with holes drilled for drainage. vegged with plain ph 6.5 tap water and 1/8-1/4 tspn "stay green" "1/2gal each plant".
24/7 under 400 watt hps @ almost 2.25-2.5 ft above tops. til plants were about 12 inches.

january 19th, 1/8 tspn budswell, 1/8 tspn stay green, 1/8 tspn botanicare pure blend bloom pro (soil) "1/2gal each plant"

january 20th, noticed tip curling.

january 21st, looks like some tips were burning, curling and yellowing leaves. stopped watering

january 23rd, water, plain ph 6.5 tap water. "1/2gal each plant"

january 25th, water, plain ph 6.5 tap water. "1/2gal each plant"

january 28th, still having burning issue, snipped some lower dying leaves, and tips of leaves that were lookin dead on tips.

february 1st, going to check on plants shortly, and most likely flush with about 5-10 gallons plain ph'd water



plant abuse. lol really think so?

did you check info in chart/ just click on it Plant Abuse Chart

robert 14617 said:

did you check info in chart/ just click on it Plant Abuse Chart

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oh i couldnt match it up exactly, cuz all of those mainly look burned, not really any curling... and im kinda getting some major curlage

^^^ I feel a sharp pain in my sac when I look at that pic. Brings back painful memories.

did you donate that pic cr8z

so what do we reccomend?

robert 14617 said:

did you donate that pic cr8z

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No, thank God. I did once lose 3 babies in a similar fashion, though.

orgnlmrwiggles said:

so what do we reccomend?

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Tough to say what the problem is, but I'm leaning toward "heat stress". How are your temps and humidity? Are you measuring the temp near your plants' canopy? How many weeks into flowering are they?

im leaning toward too much water the roots aren't getting the oxygen they need and its causing nute lock....

If temp and humidity are normal, I'm inclined to agree that there is a nutrient/feeding problem.

Cr8z13 said:

Tough to say what the problem is, but I'm leaning toward "heat stress". How are your temps and humidity? Are you measuring the temp near your plants' canopy? How many weeks into flowering are they?

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well, we have a base thermometer near the bottom of the lamp, and the remote thermometer resting on the rips of the pots.

temps range from 55 at night when the lights on with no blower, to 95 during the day with no lights on with no blower. i need an extra timer for the blower during the day. im not sure how long the temperatures are at those temps tho.

humidity is usually around 50-75%

robert 14617 said:

im leaning toward too much water the roots aren't getting the oxygen they need and its causing nute lock....

Click to expand...

this might be a possibility.
this ocean forest retains water very well.
im thinking that our buckets we are using as pots might not drain enough, but it seems like they drain fine.

orgnlmrwiggles said:

well, we have a base thermometer near the bottom of the lamp, and the remote thermometer resting on the rips of the pots.

temps range from 55 at night when the lights on with no blower, to 95 during the day with no lights on with no blower. i need an extra timer for the blower during the day. im not sure how long the temperatures are at those temps tho.

humidity is usually around 50-75%

Click to expand...

Humidity is fine, but the temperature is out of control. Ideal is around 75-80. You need better ventilation to extract all that hot air.

heat stress (I tell by the tips), lower the temps (anything over 90 is deadly) and remember it takes 75f for photosynthesis to occur....maybe even back the light up a lil?

right now we have a 450cfm blower hooked up on the inside blowing the air inside the shed through hood and out the other side of the hood, and out through a vent above the door. this is only a 400 watt hps.

i didnt think it would be a problem to only turn the blower on during hot occasions because the light is almost 3 feet above the plants. (too high but our ducting limited us til today)

we not have the 400 watt hps over the 6 about a foot and half above the highest canopy. and we are running the blower 24/7 starting now.

i think we might need to make an air intake port because the blower causes air to come through small cracks. any ideas if that would help?

Air intake hole(s) would be good, but you should be using that blower as exhaust to vent away the hot air.

need to remove the hot air for sure