Blaze & Daze

DarkWeb

Well-Known Member
I reuse mine. I throw out the thickest part of the root ball, then shake out and keep the rest. It saves like half of a pot. It breaks down eventually and gets a little sludgy. Since I don't use perlite if it gets too sludgy they get overwatered. I hadn't noticed it before. And I think that's why I overwatered my last batch of seedlings!
Perlite is great......roots love oxygen.
 

shnkrmn

Well-Known Member
I reuse mine. I throw out the thickest part of the root ball, then shake out and keep the rest. It saves like half of a pot. It breaks down eventually and gets a little sludgy. Since I don't use perlite if it gets too sludgy they get overwatered. I hadn't noticed it before. And I think that's why I overwatered my last batch of seedlings!
Isn't perlite essential?
 

Rsawr

Smoke and Mirrors
Staff member
Isn't perlite essential?
Not in my experience. I haven't used it in years, and aside from my last batch of plants have never overwatered a plant in coco. It was very clear the medium was too sludgy this recent go around though, I just hadn't yet experienced it and got quite a shock. I know what to look for now, and will be less cheap and toss it after 3 or 4 uses
 

DarkWeb

Well-Known Member
Not in my experience. I haven't used it in years, and aside from my last batch of plants have never overwatered a plant in coco. It was very clear the medium was too sludgy this recent go around though, I just hadn't yet experienced it and got quite a shock. I know what to look for now, and will be less cheap and toss it after 3 or 4 uses
It's not about over watering......it's oxygen. And when you have a medium that can get fresh exchange of oxygen more often it's better for the plant.
 

StareCase

Well-Known Member
... Are those peat based? ...
They are both peat based. Basically a mix of sphagnum peat, dolomitic and calcitic lime, mycorrhizae, varying sized perlite and wetting agents. SM also contains some silica.
... plus the Pro Mix is precharged from the previous grow so win! ...
I was thinking of getting a big garbage pail and putting all the used PM/SM into the pail and letting nature flush the old stuff out over the course of a few months. So I don't have to let nature do it's own flush?
 

Rsawr

Smoke and Mirrors
Staff member
It's not about over watering......it's oxygen. And when you have a medium that can get fresh exchange of oxygen more often it's better for the plant.
Sure. But for me, I experienced results I was happy with without spending the extra money. No seedlings died. No plants suffered (til I pushed it). I don't need to spend an extra 150 bucks a grow to get an ounce more off of each plant. I'll agree that maybe if I used perlite and watered more I would get a higher yield. But my plants are usually healthy and happy. To each her own, and mine is saving a large amount of money for very low loss.
 

TCH

Well-Known Member
It's not about over watering......it's oxygen. And when you have a medium that can get fresh exchange of oxygen more often it's better for the plant.
That's why you feed multiple times per day in coco. Feeding multiple times per day is all about pulling fresh oxygen into the coco. I too have ditched the perlite and I could not be happier about it. I hate the stuff.
 

curious2garden

Well-Known Mod
Staff member

DarkWeb

Well-Known Member
Sure. But for me, I experienced results I was happy with without spending the extra money. No seedlings died. No plants suffered (til I pushed it). I don't need to spend an extra 150 bucks a grow to get an ounce more off of each plant. I'll agree that maybe if I used perlite and watered more I would get a higher yield. But my plants are usually healthy and happy. To each her own, and mine is saving a large amount of money for very low loss.
$150 !? I get it in 15# bags and it's not anywhere close to that. You know how much perlite it takes to make 15#........a whole freaking lot lol
 
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