What is the best pH level for growing in coco? Please help

[W1zard]

hmm, having some issues resolving what exactly the best ph lvl is for coco.. i know between 5.5 n 6.5 is the basis and ive been shooting for between 5.8 and 6.2 but ive been reading some stuff recently which suggests i need at least a 6 or over? is this correct?

Not sure if plant is suffering from a calcium deficiency or or is a nute lock out from poor ph. many thanks for your help and pls check out my grow in link

ps, had done some lst as well tied down recently to tame canopy lvl

 

[Weaselcracker]

Re: What is the best ph lvl for growing in coco. - pls help

I'm no expert on coco- but the correct range is 5.8-6.2. Often what people do is feed/water on the low side- between 5.6-5.8. At least in my experience, I find that the ph tends to rise in the pot. So if I water at 5.7- I can test the runoff a few days later and it will be in the low to mid sixes. This is a good thing. If you look at a nutrient uptake chart showing the different nutes and how they are affected by ph, you'll see that you need a certain range to satisfy the plants.
I think you need to add calmag to fix the deficiency shown.
Good luck.

 

[W1zard]

Re: What is the best ph lvl for growing in coco. - pls help

Thanks

 

[W1zard]

Re: What is the best ph lvl for growing in coco. - pls help

my run off is just over a ph of 7 atm, does that mean i should be shooting for a lower php when watering nxt

 

[Weaselcracker]

Re: What is the best ph lvl for growing in coco. - pls help

IMO - I would call that good- not worry about the runoff much, and focus on making sure that what goes in is balanced correctly. I mostly grow in sunshine mix- and I have a couple little plants in coco right now. As long as I keep the ph going in at about 5.7-6ish everything is fine. There have been a couple times that my meter was reading high by 0.2 - 0.4. , which meant I was actually watering in the 5.3- 5.5 sorta range. Then I got a bunch of problems- wilty leaves and slow growth, leading me to believe that 5.6 was as low as I'd ever want to go.
But to answer your question. No- don't worry a it the runoff much. Yours sounds good. It's useful to check it sometimes - to see if anything completely crazy is happening - but it can be confusing- generally best to just focus on the ph going in.

 

[W1zard]

*wipes sweat from brow

awesome thanks again, is muchly appreciated