How long do I flush before harvest?

P

pincher

Active Member
I am on my first aeroponic grow - I have read that when using a solution such as clearex that you should anywhere from 3-14 days before harvest. Can anyone with hydro/aero experience narrow that window down or give me a more accurate number?

Thanks
 
Serotonin

Serotonin

Well-Known Member
Yea, 2 weeks is what I hear but I'd be more interested in finding out if thats because the buds don't really grow much after that or if the nutes just affect the taste.

Half the stuff I smoke I think isn't flushed when I buy KB's but I will flush mine for 1 week prior to harvest.
 
scias

scias

Well-Known Member
its the taste. most cannasuers flush to get the most pure taste of the bud without any interference from possible nute additives that might still be lingering at harvest date. but i honestly cant tell the difference bewteen 1-1½ weeks and 2.
 
K

kittysecrets4u

none
Before harvesting, the plants should be fed plain water only (no fertilizer) to remove any fertilizer that has built up in the plants themselves, and the hydroponic media or soil they were grown in.

If you are growing hydroponic marijuana, start clearing about 7 days before harvest. This can be done by changing the solution and using only distilled water or water treated with reverse osmosis (no nutrients). Some growers will change the water two or more times before harvest because the media may hold nutrients.

With soil you need to change to distilled water or water treated with reverse osmosis about 14 days before harvest. Avoid slow release fertilizers because they are hard to remove. Growers that have to use slow release fertilizer can use regular nutrients for the last month.
 
potroast

potroast

Uses the Rollitup profile
Well, flushing time is different for each kind of hydro system. Before you can cause the plant to use its stores of nutes, you must deplete the nutes from the medium. With aero, there is no medium, so that time isn't needed. When you change the res to water, and Clearex, the plant starts using its nutes right away. I'd say for aero, to do that for 3-4 days and you will see overall yellowing, and can harvest at any time.

HTH :mrgreen:
 
S

sith

Active Member
First timer here.... small dwc rubbermaid under 400hps .How does the prospect of flushing at the first sign of amber trichs sound?

.sith.
 
email468

email468

Well-Known Member
I think plat was saying a nute-filled plant tastes awful. i flush for two weeks - never thought to experiment with flushing less time ... hmmm
 
R

ripabg

Active Member
hey experts i got a question to get pure bud taste, im growin a special strain, . . . when would i flush a ebb and flow system, and the plants are grown in 6" rockwool cubes?
 
S

sith

Active Member
yeah.. i know that un-leeched dope is shwag ..i just wanted to know how long most other DWC reservoir boys get in amber..i.e. how long after first sign of amber trichomes do you harvest?

.sith.
 
M

martyshoemaker

Well-Known Member
So with Aero do you, when using AdvancenNutes "Final Phase" is that considered the 7 days of water, or should I use 7 days Final Phase and then 7 days plain water?
 
PlatinumKasse

PlatinumKasse

Well-Known Member
sry it took me so long to reply, but ya, i was refering to the nasty side effects of plants that haven't been flushed
 
Capita

Capita

Well-Known Member
I was just wondering if you could use neut's all through harvesting if you water cure your harvest after? I heard it can remove allot of unwanted stuff out of the plant vs air drying. Even if you couldn't run neut's all the way through i bet you could at least flush later?
 
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