Any advice on my first grow

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Bigl199

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Hi all, 3 plants growing under 1 900w LED.
Using advanced nutrients micro, grow, bloom.
2 Jack herer and 1 Malana bomb autos.

They're currently drinking just under 1 litre of water a day per plant, sounds excessive to me, temperature is sitting at 26c and humidity is rather low at 28 but not sure how to get it up.
Also seeing some yellowing / purple on the leaves but not too sure what could be causing this.

Any advice would be appreciated
 

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I was having a humidity issue in my 4x4x7 grow tent, I added a small humidifier in it. This took care of my low humidity issues. I have also been told that suspending damp towels will help.
 
They are about 2 weeks into flower, maybe almost 3, seem to be going pretty slow. Also noticed some purpling on one of the leaves
 
Looks just like a 2 to 3 week of flowering should look. Does your temperatures dip pretty low with lights off? I can't think of any other reason for the purple colouring.

As for the humidity, I usually have mine around 50 the whole grow. I noticed slow growth if I had my humidity levels low but then again, my set up is different.
 
The temperature only drops to around 25 with the lights off, as you can imagine LED doesn't produce a while lot of heat
 
lee1000 said:
Looks just like a 2 to 3 week of flowering should look. Does your temperatures dip pretty low with lights off? I can't think of any other reason for the purple colouring.

As for the humidity, I usually have mine around 50 the whole grow. I noticed slow growth if I had my humidity levels low but then again, my set up is different.
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I agree I would try to keep your humidity around 40% but other than that looking lovely. Also how much light are you giving them ive grew a fair few autos and I find them to grow best on 20/4 I've tried 18/6 and 24/0
 
Keeprollinup said:
I agree I would try to keep your humidity around 40% but other than that looking lovely. Also how much light are you giving them ive grew a fair few autos and I find them to grow best on 20/4 I've tried 18/6 and 24/0
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I'm currently using 18/6 , I was considering putting it to 20 hours just for the last lot of flowering but I think I'll just leave it. The other 2 are flowering alot slower
 
I grew jock horror in 5 gallon buckets and they rocked I watered every 2-3 days 1/2 gallon each they all stayed purple I don't ever check or mess with humidity when I grow I think the purple you see is what there suppose to do I have grown them twice and both times they looked purple . i'd say I got 3-4 ounces per plant
 
I thought I read jock horror sorry was trying to also upload some pics but comp is acting messed up that's when I reread your post and saw it wasn't what I thought it said
 
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