What to add to water when rehydrating Coco Brick

guitarguy10

Well-Known Member
Thank you all for your advice. I've used coco before, just never a brick that needs to be re hydrated.

I decided to just flush it with RO water, I will just add CalMag etc. to my feed, that way I can just control it a lot easier, if the plants need more I'll put more in their feed, if they need less I'll put less ... but if it's already in the coco I can't exactly take some out if it's too much for the plants (I had problems in the past thinking it was smart to just put Epsom Salts into the coco as I was preparing it .. which was stupid, as I suspect it would be for me to try and guess how much CalMag to soak it with, probably better to just watch my plants and give them more or less as they show me they need).

tl;dr I've wasted all of your time because as it turns out I'm just going to rehydrate it with RO water ... doh.

@Dr. Who I've been hunting for a long time now for some quality lab grade dihydrogen monoxide, but just can't seem to find any chemical suppliers willing to help me out. So I guess I'm just stuck with plain old water. :P

To anyone who might use Canna coco bricks in the future the runoff is pretty spicy at about 800ppm, so I'd just make sure you flush it thoroughly before use. Thank god for this bluelabs truncheon, it has saved my bacon more then a few times as I was just expecting this coco brick to be fine right out of the ... brick after rehydrating, but some flushing is necessary.
 

JohnDee

Well-Known Member
but if it's already in the coco I can't exactly take some out if it's too much for the plants (I had problems in the past thinking it was smart to just put Epsom Salts into the coco as I was preparing it .. which was stupid, as I suspect it would be for me to try and guess how much CalMag to soak it with,
The coco and most media have what is called cation exchange capacity sites (CEC) and once those are ful...then that's it. Extra calmag won't just magically cling to the coco. The reason coco is buffered with ca++ and Mg++ is the double bonds that won't allow them to be bumped off by other single bond cations like Na+ or K+. So there is actual science behind this buffering thing.

You soak the coco in 1.5 X normal calmag dose...to be sure all sites are full. The excess just drains off...
JD
 

xtsho

Well-Known Member
Thank you all for your advice. I've used coco before, just never a brick that needs to be re hydrated.

I decided to just flush it with RO water, I will just add CalMag etc. to my feed, that way I can just control it a lot easier, if the plants need more I'll put more in their feed, if they need less I'll put less ... but if it's already in the coco I can't exactly take some out if it's too much for the plants (I had problems in the past thinking it was smart to just put Epsom Salts into the coco as I was preparing it .. which was stupid, as I suspect it would be for me to try and guess how much CalMag to soak it with, probably better to just watch my plants and give them more or less as they show me they need).

tl;dr I've wasted all of your time because as it turns out I'm just going to rehydrate it with RO water ... doh.

@Dr. Who I've been hunting for a long time now for some quality lab grade dihydrogen monoxide, but just can't seem to find any chemical suppliers willing to help me out. So I guess I'm just stuck with plain old water. :P

To anyone who might use Canna coco bricks in the future the runoff is pretty spicy at about 800ppm, so I'd just make sure you flush it thoroughly before use. Thank god for this bluelabs truncheon, it has saved my bacon more then a few times as I was just expecting this coco brick to be fine right out of the ... brick after rehydrating, but some flushing is necessary.
Canna pre-buffers their coco. That's probably what your seeing in the runoff.

"It is washed and buffered, not steam sterilized and RHP certified for horticulture."
 

Dr. Who

Well-Known Member
@Dr. Who I've been hunting for a long time now for some quality lab grade dihydrogen monoxide, but just can't seem to find any chemical suppliers willing to help me out. So I guess I'm just stuck with plain old water. :P
Hydric acid? What ever for?????

Highly toxic/corrosive and likely controlled by the Fed. for it's use in explosive making.....

I strongly bet that it would roast roots! Not that I remember outright but, isn't it the "water" used to cool nuclear power plants? Oh hell, now I have to look....Yup and it's not nice stuff..
Mutates gene's
Found in cancer cells from tumors......

RUN AWAY, RUN AWAY!
 
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