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Unofficial Coco Coir Growers Thread

gaiusmarius

me
Veteran
the thing abut pot size in a coco grow, will depend on what style grow you are doing. ie tree grow, bush grow, scrog, sog. then there is a sog with short veg of a few days, or there is the sog with 2 weeks of veg time.

obviously when working with trees or bushes, pot size will play an important roll. what you can rely on is that a plant grown in coco needs less medium then the same plant in earth would. but still the longer you veg the bigger your container will need to be.

the point is that with coco, you can actually get away with a very small amount of medium, while maintaining 1 gpw harvest levels. you just don't veg for more then a few days, then the plants will still have plenty of space in the initial weeks of flowering to expand their root systems. the cool thing about coco slabs is that the roots can really go searching, even though there is not alot of medium in one slab. the fact that they are 1 meter long makes the roots think they are in a huge space. but i would not use coco slabs for plants that get more then 14 days of veg time. as the roots would start getting cramped.

to me coco is made for sog grows, ideally 30 plants per 600watts. let the clones root into the 7by7rw cubes for a week, then plant them on the coco slabs 4 plants per slab. give them 3 days of 18/6 and then whack them in to 12/12 and you end up with plants around 80 to 90 cm tall, which are covered from top to bottom in bud.

hey southpaw, your tap water ec seems incredibly high at 1.0, ph 8 on the other hand is not such a big deal just use ph minus till you get ph 6,0 including the nutes which also have some ph down included. but the ec value should be some thing bellow 0.450 you might want to think about a RO filter to give you some perfect water. because if your ec is already at 1.1 before you add a drop of ferts you will end up with ec 2.0 at a quarter dosage of A+B if you added the full recommended dose you would get ec 4.5 lol. you need to find a way to get that ec level down from your starting water. some times it helps to let the water sit in a tank for 24 hours then the chlorine can evaporate. if you get an ro unit you could use 60% ro water and 40% tap water for the trace elements.

 
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-VT-

Voluptuous Trichomes
Veteran
do you guys put seedlings into coir directly, or start them in rockwool?

My 1st seed run in coco...all 4 popped and grew into monsters...it was 100% coco...this current run with recycled coco/perlite I had issues...back to 100% Botanicare coco for poppin seeds for me, as it went much better



 

HYDROJUNKIE

Active member
nice pic gaiusmarius!!,.looks like trainwreck?..let me guess,..canna nutes?

VT!,...man im high!!...anyhow i'd say use whatever medium works for you,...I personally use a wet paper towel then transfer into very,very fine coco and I keep it super moist,...you have to keep your eye on it cuz if it drys out its a done deal....
 
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G

Guest

Nice pics all around :yummy:

I start seeds in rapid rooters. Super easy to let em get the tap root establised using a heat mat.. then move em into the pots or whatever you use. I did my cloning in rapid rooters last time and I don't think I'm gonna use my ez-cloner any more.

 
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southpaw

Member
Man, the coco companies should start paying you guys for all this advertisment. Just kidding :biglaugh: but I am definitely going to have to scrape some pennies together to give this medium a shot.

And the reason you need less medium is because the coir holds extra water and oxygen, then the stronger roots make more nutrients available? Fascinating stuff, but then I'm a little bent presently speaking...

Peace.
 
G

Guest

southpaw said:
I I have hard water that comes out of the tap with a pH close to 8 and an EC of 1 to 1.2.

Are you sure your meter is correct? The EPA here in the states has a limit of 500ppm for drinking water. My tap water is about 260ppm, and I find that very high. I don't know what country you live in, or if you're on a city water supply...but that is a dangerous level of ppm to be dealing with for your own body...never mind the plants.

Cheers,
SH
 

Bongojaz

Member
i was living in the s.w. and i tested my water at 900 +. stainless steel sinks had to be cleaned weekly with vinegar. i never drank it.....
 

HYDROJUNKIE

Active member
Bongojaz said:
i was living in the s.w. and i tested my water at 900 +. stainless steel sinks had to be cleaned weekly with vinegar. i never drank it.....

holy shit :yoinks: thats nasty as hell,....you could of been a millionare selling RO units over there...
 

Legit_User

Member
I was dicking off in the garden today trying to figure out the best way to check ph in the medium.
That article on the last page I posted ( Thanks to Anitta Bonghit, really good read) said to check ph by taking 1 part coco to 5 parts distilled water. If any of you have tried it you will see that it shows a really high reading and it can't be right. It also says you can't measure by runoff.
I decided to use 1 part coco and 5 parts ph'd nutrient solution (same as I feed them)
It came out to be 6.2, same as my runoff.
So I am thinking watching runoff really does let us know whats going on in the meduim.
Only time it wouldn't, would be if you didn't allow drainage every watering.
Does this make sense? Good rule of thumb to go by?
Or is this flawed somehow?
Thanks for reading my stoned moment. :pointlaug
Stay peacefull
 
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Bongojaz

Member
The correct way to measure pH in coir is to take a sample of coir from the rootzone, add 4 parts of distilled water, shake and then measure pH. Coir buffers pH at about 6 so pH in coir isn't too much of an issue as long as you feed them the correct pH nutrient
 

gaiusmarius

me
Veteran
i personally never bother checking the ph with the distilled water. i just check my run off and it's normally between 5.5 and 6.1 but like i said before i water 4 times a day automatically with run off every time. so the water running off has the same values as the water surrounding the roots. as the coco it's self is buffered t 6.0 you don't really have to worry about it. i find that it's the ec or ppm that needs to be measured with distilled water to get the exact salt level. but again i haven't done this more then once and that was years ago when i first heard about it. the less water you give the less reliable your run off readings will be.


to be honest i am also finding it hard to believe that anyones tap water in the west, could have such a high salt content to cause a reading of 1.2 i mean thats a bit more then i give my newly rooted clones lol. with such water an >RO unit is a must, not just for the plants either, lol.

peace out
 
G

Guest

Added a better air pump and adjusted the watering for 2hrs (1hr without lights and another lights on) when lights go on, 4x 15min when lights are on and 2hrs when lights are going off. And they sure like it.

C99 f2 @ 24d


Gogo coco!
Thanks everybody, this is one of the fattest infos about growing in coco.
 
G

Guest

Planet ganja has a coco forum with lots of good info and knowledgeable people.
 

-VT-

Voluptuous Trichomes
Veteran
I wish ICMAG had one....at least a soilless forum....have not been to PG in a while...I like that site's grow forums....
 

SoulRebel

Member
I've been using Canna Coco(loose in bag), and the stuff is incredible!!! Can't overwater the stuff(almost). I love it and would recommend it to anyone... I use it with AN Sensi A+B, plus a shat-load of other additives from AN!!!!! Also using Rhizotonic and Cannazyme with it.


... S R ... :joint:
 

HYDROJUNKIE

Active member
One thing that I have been using with coco is a Rapitest moisture meter and a Rapitest ph meter and they have given me alot of info on whats going on in my pots/coco,....and they are only $20 each

when I use the moisture meter I can accurately guage when I need to water and it has let me know when I have dry pockets in the medium or how moist it is at a certain depth....you'd be surprised at how heavy a pot is or how wet it looks to find out its bone dry in a certain area deep down...

when I use the ph probe as I slowly sink it down into the coco I get jumps from the needle indicating various pockets of high ph around 8,.....depending on what brand of coco your using or if you transplanted using dry coco you will find that it tends to repell water giving you dry pockets,....this to me is valuable information as it could lead to stunted growth of the roots/plants....I then fix the problem using a wetting agent of some sort,..I use sm-90.
 

The Budfather

Active member
pkay ig to B'cuzz pretreated coco and earth juice and perilite am i set? i hvae foxfarm nutes too. also ive been sein people with no drainage could this work im watering every day? or in tiny amounts? like twice a day?
 

gaiusmarius

me
Veteran
you have the right idea SoulRebel you can not over water the coco, not if you start early with automated waterings, the plants love it soaking wet inside the coco. my pump comes on 4 times a day and runs for enough time to let quite some water run off. in theory my coco is totally saturated with water. in practice the plants totally love it. as each time i water, i force an exchange of nutrients as well as water, but most importantly also air. by adding new fert mix the old is forced out, when the pump stops, the excess water runs off, where by new fresh air is sucked back into the coco to replace the water thats draining off after each watering. shit, i'm sure there is a better way to explain what i mean, but i hope one gets the idea, lol.

of course if you have started out with hand watering every other day, then you can't all of a sudden start to water 4 times a day. the plants will have made the roots it needs to deal with circumstances as they are in the coco. give lots of waterings from day one and the plants make hydro roots, i.e.. water roots and again makes the best of things.


yeah a coco forum would be a wicked addition to ic mag. it's some thing i've been wishing for since back in OG, lol.

yeah pg has a coco forum, i had a quick look once. there is quite a lot of good info available there. just the fact of having a coco section makes it automatically start collecting all kinds of good coco info. it really needs it's own forum, because coco growing can break quite a few rules of conventional growing. also because there are so many different ways to use coco as a medium.

peace
 

HYDROJUNKIE

Active member
I just emailed the webmaster asking for a coco growing forum,...lets see what happens?

but now that I think about it, there may be no reason for a seperate forum as im seeing alot of redundant info in this thread...

maybe we need a forum entitled ''coco watering cycles'' :D
 
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