How long do you flush for, and why?

[danks]

proper flush will get your soil in perfect conditon to reuse. 300- 400 ppm and ph at 6.5, better then buying new untested high ppm promix. hygrozyme helps eat up left over roots after you take the mass root ball out. if you do it right your second pull will be way better in quality and yield by controlling medium ppm and ph.

 

[danks]

also you can get bigger yield as sometimes we push heavy feeding near the end to try and get higher yield but often lock up nutrients , if you can find the perfect balance of your medium and your strain you can control it for max yield.

 

[toohighmf]

Slow n steady wins the race every time. Flush until the leaves fall off. More food doesn't enhance yields. It just makes leaching these salts harder.

 

[Maj.Cottonmouth]

It sounds like most of you guys are talking soil, how long do hydro people flush for? I was thinking of two days with clearex and then 5 days with tap water, SM90 and pH down.

 

[Guest 18340]

Really? It usually take more for me, but I have little light, just a 250w hps (although I keep it close). I start flushing when the plants change color or have a large amount of brown pistils. When do you start a flush?

On my 60 day stains I start giving plain tap @46 days.

 

[Guest 18340]

The whole point of flushing is to rid all reserves by allowing the plants to fully metabolize EVERYTHING. Not only for good clean smoke, but cannabis produce trichs terpines & flavenoids as a defense mechanism. Giving the plants enough purified water, and a carb based flushing with the enzymes molasses produce to eat salts. I'm not using the carb as an amendment, but to feed the flushing agent. Carbs do not penetrate roots.

Thats what I thought toohighmf. The person I was quoting only mentioned flushing as a way to remove salt. Unless he was talking about flushing at a different time.
You're right, I'm talking end of flower flush
Btw, nice to see ya back

 

[ColoradoOG]

The whole point of flushing is to rid all reserves by allowing the plants to fully metabolize EVERYTHING. Not only for good clean smoke, but cannabis produce trichs terpines & flavenoids as a defense mechanism. Giving the plants enough purified water, and a carb based flushing with the enzymes molasses produce to eat salts. I'm not using the carb as an amendment, but to feed the flushing agent. Carbs do not penetrate roots.

Actually complex carbs are not absorbed but simple are. Your complex are typically beneficial food where as your simple are designed for your plant

 

[danks]

8 week strains run to 9 weeks start flush at day 52 .

 

[danks]

but for week 7 run 800 ppm from 1400 week 6

 

[danks]

thats for 5 footers so adjust accordingly.

 

[ColoradoOG]

It sounds like most of you guys are talking soil, how long do hydro people flush for? I was thinking of two days with clearex and then 5 days with tap water, SM90 and pH down.

When i posted my comment it was for hydro and soil. When im in soil i flush medium hard until i have a low ppm then i add flushing agent like clearex but i use final phase. When im in hydro i drain and add water plus final phase.

 

[rooted]

there is no magic number. as mentioned before, medium & feeding schedule throughout flowering has much to do with the "happy ending".

light intensity is also a factor. flower tops getting intense light will use stored food before the lower budsites. for this reason harvesting in stages can be beneficial

as for the why part.....i believe all growers who do so are flushing for the same reason: end quality...specifically minimal residuals, clean burning flowers, pure flavor, color change

those who are feeding up until harvest have likely been brainwashed by a clueless commercial grower......or have smoked so much phosphate that their tongues and throats are forever numb

 

[YosemiteSam]

here is how you chelate metals with edta http://www.plantphysiol.org/cgi/reprint/46/6/862.pdf

it is a much more complex reaction than just dumping some fucking final flush or any of the other edta flushing agents in your res and running it through the plants.

i don't see any way in hell these things can do anything. but hey, i have been wrong before. anyone who thinks differently feel free to lay some science on me...not particularly interested in anecdotal evidence though.

and don't tell me aminos added to a res will chelate metals either...i looked up the patent for a company that makes legit amino acid chelated metals and that reaction is even more complex.

 

[BCNeil]

I flush 7-10 days. Day 1 of the flush is water, lots and lots and lots of fresh water.
Then Fp a couple times throughout the flush. Some people use so much ferts, that they continue to build up, making flushing harder.
So I make sure to monitor soil ppm throughout the grow, and will often do water only feedings to keep it where I want it.

Lent my ppm meter to a friend, and his runoff prior to flushing was over 2400ppm.
He had been using the recommended strength of nutes his manufacturer gave him.
At no time during a 9 week flower did he bother checking his soil.
I remember the runoff had pH well over 8.

Monitor your runoff each week. It will make the flowers grow nicer, and reduce the flush.
People that require 3-4 weeks of flushing, are not supplying their flowers with what they need in late flowering

 

[Rednick]

Try not flushing with organics...it will surprise the shit outta you! (I still flush my organics, but is a good argument for organic based gardening)
Mainly two reasons for flushing:
Rid the medium of excess salts (nute lockup, root bind, ect.)
Force the plant to cannabilize itself (terpine production, cannabinoid production)

Both are beneficial.

 

[Mountain]

When I was running indoors tried numerous mediums and nute programs. In the order I tried them...

1. GH 3 part in rockwool - 14 days
2. AN salts in coco based soilless - 14 days
3. Roots organic based in coco based soilless - 14 days
4. 100% organic in soil - 0 days

 

[DevilWeed]

0 days for me

I have flushed for everything from a day to a few weeks. I don't notice any difference with my strains and it makes perpetual growing MUCH easier. Burns clean and tasty every time - I think the cure may be more important than the flush.

 

[Terramoto]

Hi, i have a plant on the same soil for about 2 years (indoor). How can a guy like me who doesnt have TDS meter (I have but its the chinese one...) know when the flush is done? My buds leaves are starting to curl up and the bottom leaves are yellow, but i've fed a low N fertilizer while she was in flower.

 

[3dDream]

DevilWeed - I've done tests too with different amount of flushing and I could still taste poop @ 5 days. I am in coco and use pure blend pro. I also used a vape so maybe that is why I could still taste it.

 

[bigwity]

flushed weed tastes good even when you quick dry it. ive only started flushing properly since i was shown how, i use molassas as it acts like a turbo boost to use up all the nutes that are left i start my flush 4 weeks b4 the end to take the shine from my leaves then feed light for a week then two weeks b4 finish i just use plain mollasas and water. my weed used to smell of hay sometimes id get a bit of a flavour over the hay taste even witha big cure. after i was shown this every crop has been stinky and stonking. im not trying to convince any1 im just telling you what i do. bigwity