Leaves are curling...please help...

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Hydro Grows

What is your experience level? We are a first timer and a novice
What type of hydro set-up are you running? DWC

Your Equipment:
A) Type and wattage of lights. 400W HPS
B) Distance from tops? 20 inches
C) Reflector type? bat wing
D) What are the bulb wattages, kelvin ratings, and schedule? 18/6
E) Is there a consistent fresh air supply? yes
F) Do you have an exhaust fan and a circulation fan? An exhaust fan with carbon filter and three additional circulation fans
G) Size of reservoir? two 3.5 gallon buckets

Your nutrients and water:
H) Source of water. (tap or filtered) What's it's ph? Tap water with a 6.0pH
I) Specific brand and N-P-K ratio for each bottle. List dosages (quantity per gallon) and current feeding schedule. Soul synthetics Grow 3-1.25-1.25...we have given them a total of 30ml in each bucket. two feedings not quite a week apart.
J) What is the ec/ppm of your unadjusted tap (or filtered) water? do not know...we are waiting on our ppm meter
K) What is the ec/ppm of your nutrient solution? IDK
L) What is the temperature of your nutrient solution? (reservoir high and low temps) IDK
M) Does your ec/ppm show a rise or fall when you do your daily PPM check? IDK
N) Does the ph fluctuate? it changed slightly (went up) when we changed the reservoirs
O) Do you foliar feed? If so, with what, how often, and at what time do you
spray? (Just after lights come on, just before they go out...) we do not spray
P) How often do you replace reservoir water/nutes? weekly

Your growroom:
Q) What size of closet, room or hut? our tent is 35in wide, 22 in deep, and 5 ft tall
R) What are the temps and humidity levels while lights are on? currently @ 82.9F and 39% ...With lights off? generally 75-78F and about 33-35%
S) Have you seen signs of insects in the growroom? no
T) Are the roots long and white, or brown and slimy? roots are long, but have a light brown color that we noticed since we last fed.

Your strain:
U) What strain are you growing? (Indica dominate or Sativa dom?) we have purple kush from buddha seeds, moby dick from dinafem, and candy kush from auto seeds
V) Is this an photoperiod strain? these are all autoflowers
W) From seeds or clones? from seeds


Our plants are about 3 weeks old...here are some pics
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Wow , to many Q's for me on a saturday night stoned ,lol , your question was about curleing leaves " lift the light a touch mate " :peace:

ps drop your pH a bit and welcome to the forum enjoy your stay soul
 
To get the best diagnosis, natural light is the best.............or white
 
ty iv raised my light it was only 8-10 inches away.
heat has been a problem since day 1 in my tent .
I have added an intake and an extra fan to blow across canopy and 1 fan running to blow heat away from the light and shoot the air to the top of the tent.

my temps run from 80-85 at the worst and the best 74-78.

thank you for the help and thank you for the welcome dex (i friggin love snoopy and charlie brown)
 
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And there is no mention of your PH
135209d1296842079-ph-potential-hydrogen-manual-polled-ph-vs-uptake.gif


 
so i got the water changed out and cleaned my tubing and stone. balanced both to 5.8pH. took some new pics...tried to do my best with the light...but it's a small space.

a look at the roots
growpics 5-20 002.jpggrowpics 5-20 003.jpg

Purple Kush on the Left and Moby Dick on the Right, and a very tiny purple kush in the front middle
growpics 5-20 006.jpggrowpics 5-20 004.jpggrowpics 5-20 005.jpg

Top left is Candy Kush, Both bottom plants are Moby Dick
growpics 5-20 007.jpggrowpics 5-20 008.jpggrowpics 5-20 009.jpggrowpics 5-20 010.jpggrowpics 5-20 011.jpg

Large fan leaves on my purple kush...and both her and the Moby Dick that are in the same bucket are showing their lady parts
growpics 5-20 012.jpggrowpics 5-20 013.jpggrowpics 5-20 014.jpg


This is a tiny Candy Kush...she is taking her time...but she does have roots...she is the middle cup in the second pic.
growpics 5-20 015.jpggrowpics 5-20 001.jpg


How long should i wait before i feed them grow nutes again, considering i changed their water about an hour ago and last fed them about a week ago?
 
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