Grow Mediums How to reduce PH in coco? And watering seedling question.

[lunarman]

I am measuring about 6.6 in canna coco that I rinsed well and the precharged it before putting germinated seeds in it. I soaked them in tap water that is medium heavy and I ph'd it to about 6.

The babies are not growing at all. Stuck in neutral at about 1/4 inch tall for 3 days. It seems weird to me.

So I checked my PH using a soil probe from Control Wizards that @Waira uses. I'm getting a reading of 6.6 and I would like to reduce it to 6.0. How do you do that with a pot full of coco that is already drying out and i won't want to soak it because of the seedling. But if even so how do you reduce or increase PH in coco? Do you just ph your water to some value (like maybe for me 5.5 since I want to end up at 6) and water the coco?

And what is a good technique to water seedlings? Oh and I have plastic opaque humidity domes over them and T5HO lights above.

 

[KonopCh]

Yep, water it with lower pH.

 

[Lizardking]

The best way to check ph and ec in coco,is by testing your runoff with a ph pen or ec pen.you want to be aiming for a ph of around 5.8-6.looks like you’ll have to flush the plant through with phed water to get the ph you desire.

 

[lunarman]

I thought I read the best way was to measure the soil itself, not the runoff. Read that somewhere. I think @Waira is in that camp.

I think the baby girls are rooting around below and not showing much up top. They are still super small. Almost need a microscope to see them. Seriously only a 1/4 inch tall for 4 days.

 

[Lizardking]

I thought I read the best way was to measure the soil itself, not the runoff. Read that somewhere. I think @Waira is in that camp.

I think the baby girls are rooting around below and not showing much up top. They are still super small. Almost need a microscope to see them. Seriously only a 1/4 inch tall for 4 days.

Your not growing in soil, I thought you said you were growing in coco??

 

[Lizardking]

Unless for the last 8-9 years I’ve been doing it wrong,but I’ve never heard of using a soil ph metre to measure your ph in coco??

 

[lunarman]

Your not growing in soil, I thought you said you were growing in coco??

Woops. Didnt mean to write soil. Coco for sure. But its just the medium and as long as its not fluid/liquid you can measure the PH with the control wizards PH probe. And i believe that is better than measuring runoff. But I could be wrong. And it might not really matter to an experienced grower. But for me the newbie I find this way works great.

 

[Lizardking]

Woops. Didnt mean to write soil. Coco for sure. But its just the medium and as long as its not fluid/liquid you can measure the PH with the control wizards PH probe. And i believe that is better than measuring runoff. But I could be wrong. And it might not really matter to an experienced grower. But for me the newbie I find this way works great.

I’ve never seen one of those to read ph in coco before,I always check runoff for those readings.i read my runoffs every 1-2 weeks...it’s an important part of growing to me,lets you know how the plants are getting on.

 

[Rapha El]

You said you let it dry out. In an earlier conversation you also said you mixed your coco with a high percentage of perlite. Don't ever let it dry. I can NOT stress that enough. If you let it dry the PH changes.

There is no possible way you could ever over-water in coco. Technically it's possible.. but you'd have to actually try to drown the plant.

 

[KonopCh]

There is no possible way you could ever over-water in coco. Technically it's possible.. but you'd have to actually try to drown the plant.

I keep reading this at various sites... and still don't know how you cannot overwater coco?
Hell, it's just that easy as soil. Pour 1L each day into pot first 20 days... And then say you cannot overwater coco.