What’s the ideal ph/ppm level for coco perlite mix as medium?
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Welcome to the forum.
pH: 5.8 to 6.2 for coco. PPM should be ~1,000 for a mature plant and somewhat less for a young plant.
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Even lower if running autos: they seem to respond to a lower TDS than photoperiod.
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For veg you will want to pH your cocoa to 5.8ish for flower you want to be around 6.2 ish I run Jack’s nutrients in my plants get 900 to 1000 PPM from seedling when running in Coco you will want to give them feed every time you water
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I start at 5.75-.8 and go up to 6.2 by the end of the grow. Roughly 1,000ppm the whole way. I do go heavy when flowering, up to 1,200 once or twice a week. Coco is easy to flush, difficult to overwater, but does involve a little more work, as you have to feed (almost) daily.
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I just run everything at 6.0.
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Why the increase in ph over the grow? Just curious is all.
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I’ve always done 5.8 through the entire grow. When did running at 6.2 in flower become a thing? Honest question…I don’t want to miss out!
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Throughout the grow, the plants need different nutrients to become more readily available. Different nutrients are taken in at slightly different ph numbers. During flower, the nutrients needed are more available at a higher pH. Check out @Low and @MadamCalamity. They have a journal together and increase pH over time. Their buds are freaking amazing.
I’m not saying you have to do this, or something like that. Or you’re doing it wrong if you don’t. Shoot, it’s almost too much extra detailing for me. It is recommended on almost any cannabis growing site, though.
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Good to know and makes complete sense. Just thought I’d ask is all.
Thanks for the info!
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All good man! My bad if that seemed a short. I’ve been steady increasing with this grow and am having noticeable results. But I’m also feeding pretty heavy this grow also lol.
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Thanks for this question @Will614 . Saves me from having to ask in a separate thread. This will be my first CoCo/Perlite grow as well.
So then for a general consensus are we going with Ph 5.75 at seedling and slowly increase to 6.2 by harvest? And PPM 1000 from jump and 1200 a couple days a week in late flower? And with the CoCo/Perlite you feed every day and never just water, right? Thanks!
PS, half those numbers for Autos?
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I’m not perfect but I’ve got my grow documented pretty well and I’m in coco. I’ve had a lot of help and been pretty successful. Lots of different opinions on here. More than one way to do everything but within reason.
I documented this grow pretty well. I grow autos too. Also, I give full nutes. Lots of info there. If you search me up you’ll find it. I update daily.
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Also. It’s a long thread. Probably start this grow early March.
@ShureGreen
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Except idk how to find it, or how to follow people.
@ShureGreen https://ilgmforum.com/t/in-search-of-a-mentor-for-my-autos/93037/988
Maybe this is how. I’m not sure either
I think the plant absorbs more nitrogen at the range of 5.8to 5.9 then 6 above absorbs less nitrogen nore phosphorus and potassium…thats what i read dont know how true ut is
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I run liquid organics with coir. I go in as low as 4.5 (natural pH of nute mix). I never add pH up (potassium bicarbonate) bc it makes the medium pH swing high and stay there.
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Yes it does! I’ve noticed this when I was growing in soil and would have to raise the pH of the Jacks nutrients from 6.0 to 6.5. by mid flower my runoff pH was 7.5 to 7.8 ! I switched from soil to Promix and things are much better now.
I’d also like to add that the pH in the medium seems to correct itself from veg to flower during the grow cycle. I’ve noticed the pH will climb from 5.8 to 6.2 naturally and all I do is pH every feed to 6.0 and the roots do the rest.
@Borderryan22
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When I first started using organics, I had issues bc I didn’t listen to the Earth Juice people. Then, I moved to coir and really had to learn a whole new way of looking at pH. Certainly it’s dangerous to use an input of 4.5, right?! Nope. Not at all. Healthy microbes and proper feed regimen allows nature to do its thing.
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