[sourkush]

What do you guys think about flushing in the shower with a lot of water to remove all nutes in the soil?

Is it ok to kill the bacterias with the chlorine and mess a little bit with your ph? Maybe 1 week before harvest?

Anyway you want the plant to finish the nutes stocked in its leaves and not use it from the soil anymore? Or is it bad?

[Levitationofme]

chlorine? not recommending using that in a flushing agent.
No expert here, but it doesn't sound good.

I would search these forums for flushing in your specific grow media.
I would wager there is an active argument going on over the different methods

[sourkush]

Originally Posted by Levitationofme

chlorine? not recommending using that in a flushing agent.
No expert here, but it doesn't sound good.

I would search these forums for flushing in your specific grow media.
I would wager there is an active argument going on over the different methods

Lol, no i wouldn't put chlorine to flush, but chlorine or chloramine is present in tap water, that's why you leave it out for a few days before using it for waterings, because chlorine or chloramine kills microbes and bacterias, which is not good for your soil life. So i know it's bad. What i'm asking is, is it bad to kill your soil life in the last week? Because you don't want nutes from the soil anyway, and so you don't have to prepare hundreds of liters of water to flush all your plants with 3x water compare to soil (ex: pot=10L you flush with 30L of water)

[neverforget4/20]

Has everyone tested and compared the effects of flush / not flush? Is there any science showing differnt values in bud f/nf?

I'm not a believer but ive got a plant that is taking longer than expectec to finish so shes getting a two week water only im curious if ill find anything more than bro science.

https://www.cannabisbusinesstimes.com...-not-to-flush/

[TedNugget]

I have learned to use less and less nutrients over the years, to the point where I don't really need to flush a bunch of gallons of water through my medium anymore. But when I feed heavy, I always do a big flush with 2 weeks to go. I will add about a gallon of water to the pot, let it sit for 20 minutes (to help dissolve the nutrients and get them ready to flush out). Then I set my plant on top of a piece of 2x4 wood I place across the top of a rubber maid bin (so I don't have to carry the plants out of the room) then I run 2-3x the water through it.
Just as I am flushing the last gallon of water thru the pots, I add 1/2 to 1 tbsp of molasses to the water. This helps the plants to finish strong and still taste great.
Then I just water with plain RO water for the next 2 weeks.

I've found its just best to feed lightly the whole time. I use organic nutes and only feed once per week, then I rotate between plain water and a mix of Humic/Fulvic acids and Amino acids the rest of the week, plus 1 watering of enzymes per week too. This makes sure the plants use up the nutrients I gave them earlier in the week. This is in Pro Mix with little to no nutrient value.

I used to feed every watering, or every other watering but I wasn't getting the deep taste and smell I wanted. Now that I feed much less I find the results are much better. I may sacrifice a tiny bit on yield, but the quality difference makes it totally worth it by far.

You may want to think about adding a flushing agent if you are using tap water to flush. Remember tap water has nutrients in it. I would recommend getting an RO filter, or at least buying some buckets of RO water from your local fish/aquarium store to flush with.
Also, check out Herculean Harvest by nectar for the gods. It's organic bone meal. It's great for flower and it also works great to flush (with 2 weeks to go, not used until the end). I will see my leaves start to yellow the very next day after flushing with HH. I usually only use it during the grow now a days though. Or if I run into a problem with nutrient imbalance.

[TedNugget]

Originally Posted by sourkush

Lol, no i wouldn't put chlorine to flush, but chlorine or chloramine is present in tap water, that's why you leave it out for a few days before using it for waterings, because chlorine or chloramine kills microbes and bacterias, which is not good for your soil life. So i know it's bad. What i'm asking is, is it bad to kill your soil life in the last week? Because you don't want nutes from the soil anyway, and so you don't have to prepare hundreds of liters of water to flush all your plants with 3x water compare to soil (ex: pot=10L you flush with 30L of water)

From what I understand, Chloramine does not evaporate no matter how long you leave the water set out. Chlorine evaporates, but not chloramine. So if your tap water has chloramine in it and you are not using a filter made to remove it, it's probably been killing off some of your microlife anyway.

I'd be more worried about the nutrients that are in tap water during the flush. You can't get a true flush with tap water IMO.

As far as micro life - are you reusing the soil? If not, I'd be focusing on flushing the plants. I don't see where killing some off during the last week will hurt much of anything if you are not reusing the soil (and trying to cultivate that micro life and keep it alive for next grow).
I worry about smoking nutrients though. I want my smoke as clean as possible.

[sourkush]

Originally Posted by TedNugget

From what I understand, Chloramine does not evaporate no matter how long you leave the water set out. Chlorine evaporates, but not chloramine. So if your tap water has chloramine in it and you are not using a filter made to remove it, it's probably been killing off some of your microlife anyway.

I'd be more worried about the nutrients that are in tap water during the flush. You can't get a true flush with tap water IMO.

As far as micro life - are you reusing the soil? If not, I'd be focusing on flushing the plants. I don't see where killing some off during the last week will hurt much of anything if you are not reusing the soil (and trying to cultivate that micro life and keep it alive for next grow).
I worry about smoking nutrients though. I want my smoke as clean as possible.

Hi Ted, thx for your answer.
Lots of points to answer.

I too am feeding organics (biocanna) and believe too that less is more when it comes to nutes. I grow only for my own and want clean tasting meds.
I've never grown with mineral nutes but i guess organics might be a bit harder to flush because they are slower to decompose and stay longer in the soil. So if the plant hasn't used enough during life cycle there might still be plenty in the soil.

About herculean harvest i'm not in the us so i don't think i can access it easily.

About chloramine, i know it's very hard to get rid of it but from what i understand after 5 to 7 days of aeration it's very low level and doesn't impact much.

I'd like to get a RO filter but it seems a pain to install and a lot of wasted water, i'm in europe, water is drinkable, it might not be has bad as in some part of the world, not much growers use RO here.
And to buy it from a store would be too much, i usually have about 12/14 plants in 11L pots, so 150L of soil, i would need to buy 450L to flush well...

When my plants have used their nutes they taste perfectly, but this time some of my plants have a dark ash even if i harvested them with mainly yellow leaves.

I don't plan on reusing my soil, so i think from now on i will flush them in the shower just to be sure there's no nutes left in the soil the last week

[neverforget4/20]

So no one has scientific evidence that flushing has an effect. It seems like bullshit to me for many reasons. "Why flushing is a stoner myth" is all over the internet. On the other hand force of habit and "white ash" seem to be the supporting reasons.

Are there any other crops that flush? Tobacco? no i dont think so, fruits veg etc??? no

Also the chlorine chloramine effects are very misunderstood. Considering the PPM of those agents in tap water the sanitizers are instantly oxidized/deactivated by organic matter.

Using molasses and talking flush is questionable. Molasses is loaded with K Fe and S. Also stimulating the life and then death of micro organisms is gonna give a flush of mineral nutrition, it's not much different that feeding ions.

[sourkush]

Originally Posted by neverforget4/20

So no one has scientific evidence that flushing has an effect. It seems like bullshit to me for many reasons. "Why flushing is a stoner myth" is all over the internet. On the other hand force of habit and "white ash" seem to be the supporting reasons.

Are there any other crops that flush? Tobacco? no i dont think so, fruits veg etc??? no

Also the chlorine chloramine effects are very misunderstood. Considering the PPM of those agents in tap water the sanitizers are instantly oxidized/deactivated by organic matter.

Using molasses and talking flush is questionable. Molasses is loaded with K Fe and S. Also stimulating the life and then death of micro organisms is gonna give a flush of mineral nutrition, it's not much different that feeding ions.

i don't have scientific knowledge on this subject

But i think everyone has experienced buds burning to a dark, hard ash, and it seems accepted that this is due to nutes being still in the buds. And buds like this don't taste clean, my only goal is to avoid this

[sourkush]

i've read stories of people thinking it was a myth and then a friend of them grew the same plant but flushed it and it tasted much cleaner.
I don't really want to take the risk to have bad tasting buds just to test the myth, and anyway at the end of maturation it seems that the buds are fully developed and dense so why would they need more nutes?