growing in Coco and perlite mixture

Botonist

Well-Known Member
I'm growing AK 47 in pure 50/50 coco-perlite, i have it under a 600watt mh and 400watt mh next to it lighting two others 24-7, 75 degrees avg temp, 40% rh, feeding jungle juice two part every other watering full dose and a nitrogen, cal-mag half dose on the other waterings, I have another ak-47 in pure fox farm ocean soil, only giving the jungle juice quarter strength to it every other watering and it looks a lot healthier and bigger. I have never done the 50/50 coco perlite. So my question is should I be giving it more of something or do something different, wanted to switch lights tonight but not sure it will do well since it didn't keep up with the other two. Any help will be well appreciated. Thanks in advance.
 

rob333

Well-Known Member
I'm growing AK 47 in pure 50/50 coco-perlite, i have it under a 600watt mh and 400watt mh next to it lighting two others 24-7, 75 degrees avg temp, 40% rh, feeding jungle juice two part every other watering full dose and a nitrogen, cal-mag half dose on the other waterings, I have another ak-47 in pure fox farm ocean soil, only giving the jungle juice quarter strength to it every other watering and it looks a lot healthier and bigger. I have never done the 50/50 coco perlite. So my question is should I be giving it more of something or do something different, wanted to switch lights tonight but not sure it will do well since it didn't keep up with the other two. Any help will be well appreciated. Thanks in advance.
if u wanna get best results in flower i would hook up a feeder and get it going 3 times a day on 30 sec feeds by the size of them pots run to wast at a ph of 5.5 on a 6 day feed 7 day flush with a 1 week fresh water feed at the last week u will be like wtf and watching them buds grow ;)
 

Botonist

Well-Known Member
Do you think they're too small to flower? I usually get em a little bit bigger before I flower but I'm always upset at the height so I was gonna try flowering after the third week of veg to keep em no taller than three feet tall.
 

Budder Fingers

Well-Known Member
Maybe the difference in growth is because the Fox Farm soil already has nutes that will feed for the first few weeks where as the coco/perlite is inert.

It looks like the coco/perlite one has the onset of a deficiency too, the yellow lines... my guess Mag.
Foliar spray with Cal/Mag or epsom salts 1 tbsp per gallon of water could help.

Different mediums need different strategies, apparently coco needs a ph between 5.9 - 6.1

Re flipping the light... if I were you I'd wait another week or so and see if you can get the straggler performing better, rule of thumb plants triple in size once put into flowering.
 

robro

Active Member
Coco needs supplementing with cal/mag as it has a tendency to hold on to these nutes.
Im growing in 50/50 coco/perlite atm and supplement cal/mag every feed/water.
You need a cal/mag supplement for that plant.
GL.
 
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