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flushing in coco

Is the method of flushing nutes before harvest the same in coco as in Soil or hydro?

Should I use my drippers or hand soak? Both maybe?

I have been doing both for about 4 days now and runoff has gone from 1200 to 300-400 (ppm). What am I shooting for here?

Would it be best to just let the coco dry out so the plant starts feeding off itself?

Sorry for all the questions and Thx in advance for any advice.


 
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tngreen

Active member
Veteran
hey man! just keep doing what you are doing and yeah i do let the coco dry out just a little more than normal but not completely. you can also use a flushing solution like Clearex with the first watering to help get all the salts out. i would only use clearex once or twice with a normal watering inbetween. i overused it once and it was a bad idea. ph'd water works great. your plants will tell you wen they are flushed with discoloration and clawing of the fan leaves.
 
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go for runoff ec same as what your putting in.

then water like normal till the end.

no use in wasting water, once you get the excess flushed out.

I water by hand and the drippers at first to get a large volume of water through and any buildup flushed out.

then use drippers after that.

Hope that helps.
 

Kenny Lingus

Active member
If the coir will be reused I'd go with pH 5,5-6,0 water for at least 3days (use nitric acid as it help flush crap outta coco and drip lines). I also give the slabs water with BioBoost/Cannaboost and enzymes for about four days to a week prior to that last flushing. (Usually the plants are flushed with weak nutrients or water and enzymes 2-3times during their 9-11week crop cycle.)

It can also be done by simply discontinue nutrients and giving regular feedings (w/slight run-off). Some growers use these things as well (alone or in different combos): Molasses, Carboload Cannaboost/Bioboost, TopMax, humic/fulvic-acid, trace of nutrients (0,2-0,3 EC), and enzymes for the last week(s).
 
Thanks guys! It's my first coco grow, just wanted to be sure. BTW, how much molasses do you usually use. I just picked so Grandma's up and wanted to try using it.

Thanx again.
 
1 teaspoon per gallon of molasses.

a tip that helps:
warm up a quart of water, then mix in the molasses.

Then pour that into your res. Will ensure the molasses mixes in well.
 

Kenny Lingus

Active member
I'd only use molasses in a reservoir if I'd remix it every 3-4days. (I find it won't keep to stable in my setup and pH-swing and bacteria flourish to easily. But it can succesfully be added at 1/2-full res-level or only the last 1-2days of every res-batch, or in the final pre-flushing period.

I hear people use it a 1 tablespoon per gallon, but personally Id stick to 1 teaspoon instead. Use organic unsulphured blacstrap mollasses, horticultural molasses, or even brown-sugar.

I'd prefer simpler sugar-mixes like carbo-load or just pure bloom-boosters for this treatment, but many people swear to using molasses as it is. (My philosophy is that this may put extra nutrients into the rootzone, but maybe the sudden boost in bacteria rob plants of food somehow... I have my views and another grower his own.)

PS! As a sidenote: the BioBizz team say that Bio-Grow can be used as a tonic for extra plant strength throughout the whole cycle. (which is why they rec. it used all the way...) My thought is that it is basically bete-based sugars and a powerful broth of organic nutrients that primarily feed bacteria -not plants- I won't recommend flushing with it, but just mention it on a sidenote as to underline the benefit of sugars in increasing metabolism in a bioculture.

OH! You mention Grandma's Molasses (I reckon Granma Engys!?! If so it is pretty fine I assume, but start easy on the dosage...)
 

word

Member
GreenBush 420 said:
Is the method of flushing nutes before harvest the same in coco as in Soil or hydro?

Should I use my drippers or hand soak? Both maybe?

I have been doing both for about 4 days now and runoff has gone from 1200 to 300-400 (ppm). What am I shooting for here?

Would it be best to just let the coco dry out so the plant starts feeding off itself?

Sorry for all the questions and Thx in advance for any advice.


In my experience, coco needs a minimal flush of 1 week... any more and i can notice some .. i also find that letting the top inch dry up b4 a feeding makes them happy.... run-off is useless, what you have is the norm....
 
C

Ca2

I make flush every I seen overflow of fertilizer. I take my plant into shower and overwater around 5 liters of water. Final flush make best 1-2 weeks before harvest.
I've hope that you understand me ;D I until study eng and tray wrote to you something ;D
Ave Coco!
 
Kenny Lingus said:
I'd only use molasses in a reservoir if I'd remix it every 3-4days. (I find it won't keep to stable in my setup and pH-swing and bacteria flourish to easily. But it can succesfully be added at 1/2-full res-level or only the last 1-2days of every res-batch, or in the final pre-flushing period.

I hear people use it a 1 tablespoon per gallon, but personally Id stick to 1 teaspoon instead. Use organic unsulphured blacstrap mollasses, horticultural molasses, or even brown-sugar.

I'd prefer simpler sugar-mixes like carbo-load or just pure bloom-boosters for this treatment, but many people swear to using molasses as it is. (My philosophy is that this may put extra nutrients into the rootzone, but maybe the sudden boost in bacteria rob plants of food somehow... I have my views and another grower his own.)

Thanks for sharing. Great Tips.

I also share the philsophy that is puts some nutes in the rootzone. (has vitamin minerals in it)

I also have seen more ph drop with molasses.

Can't compete with molasses cost.

carbo load is expensive. imho

agave nectar is another good sugar source, that is lower on theglycemic index.

therefore you get the molasses for the fast acting sugars and agave for the longer lasting sugar.

agave nectar doesn't have the micro elements like blackstrap for flushing.

may have to research this further.
 
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