Harvest & Curing Flushing a hydro plant

[Surfer Joe]

I have a plant in a 20L bubble bucket that holds 14L of nute solution below the mesh pot and is ready to harvest.
It drinks about 3.5 to 4 L per day now, but how do you flush a hydro plant?
Just filling the bucket with plain water once means that the plant will drink it up in about 3-4 days, but is that the same as flushing?
Should I use a flushing agent such as canna flush in the plain water?

 

[Larky.Derry]

i really know hardly anything about hydro bro, but im sure if you fill your res with just plain water it would be the equivelent of flushing a plant in soil

 

[Magic]

Advanced Nutrients Final Phase and plain water! I dont know much about hydro either but i heard it works wonders in hydro and it even works in soil, im trying it now in soil.

 

[Muddy]

Just switch your res over to plain pH adjusted water for the last 3-4 days. If you have a product like the AN Final Phase or Botanicare Clearex you can add them.

 

[newbud]

wounder full stuff been using it for some time now :Gary:

Final Flush™
Fertilizer rinse solution

Available in: 1 L / 4 L
Salinity can become a serious issue for those gardeners growing in containers and recirculation systems. Salt build up can cause problems for growing plants and can cause bitterness in harvested fruit. Final Flush™ is a flushing agent designed to correct over feeding issues during crop production while eliminating excess salts from the medium during the final stages of plant growth.

Along with Regular, Strawberry and Pina Colada, Grotek is now proud to release Blueberry.

Directions for use:
SHAKE WELL before using. Observe for visible signs of excess fertilizer salts such as the appearance of a white, powdery residue on the surface of the growing medium. Use 10 ml of Final Flush per 5 L (2 tsp/5qt) of water. Safe to use while plants are growing or between crops.
Hydroponics: Add Final Flush mixture to pure water in the nutrient reservoir and run the system for about one hour.
Soil/Soilless Applications:
Salt Accumulation: Apply Final Flush mixture liberally to the top of the container and allow any excess solution to drain out the bottom. Repeat a second time if necessary and then wait one week before resuming a regular feeding program.
Prior to Harvest: Use mixture 7-10 days before harvest, to remove unnecessary fertilizer salts and fertilizer flavors.

Final Flush™ Feed Chart

Soil / Soilless:10ml / 5L
(2tsp / gal)

Hydroponics / Water Culture:10ml / 5L
(2tsp / gal)

Foliar:--

the thing it say about Hydroponics: Add Final Flush mixture to pure water in the nutrient reservoir and run the system for about one hour. no do it for 5 days or more i do it for 10 day :thumbs:

 

[Surfer Joe]

Thanks everyone.
I was wondering about using pH down in the plain water because my tap water is pH 7.5 to 7.7, but doesn't pH down contain phosphorus, which we want to remove from the plant at the end?
I have 2 pH downs, one a plain pH down and one called Canna grow down, which comes in two varieties to reduce the pH of nutes in the veg stage and another to reduce the pH during the bloom stage.
It still seems to be made from the same chemicals but at a slightly lower concentration.
I just don't think that I want to give my hydro plant plain water at pH 7.7 since that is way off what it should be normally (around pH 5.8)

 

[blue]

Hi Joe

but doesn't pH down contain phosphorus

There are a few different varieties of PH down

I think one is phospohoric acid, one is Nitric acid .. and the other (organic one) will be citric acid

 

[Surfer Joe]

If there are no nutes in the flush water at the end anyway, will it matter if the water pH is high since that causes nute lockout and there are no nutes to lock out?
Or will the high pH hurt the plant in some other way?

 

[Pal23]

PH isn't important for flushing bro, for hydro you aim to keep a plant within the correct PH range so it can absorb nutrients. When flushing you want all of those stored nutrients to be excreted into the water, and PH plays no role in this. Please bare in mind this is just my understanding on the topic, I've seen people PH their flushing water but imo it is npt necessary.

 

[Grim Reefer]

I was fairly certain that you should ph your flush water., as well as flushing out all the nutrients still in the medium you want the plant to take up any stored nutrients it might have left. The only optimum way of letting the plant take up all nutrients is having the right Ph. Also think of the shock you are giving the plant by flushing with normal water.... The plant would be well used to having Ph water by this stage imagine the amount of shock you could give to the plant when you give it something its not used to. So in my opinion if you want everything flushed out and your smoke to be clean let the plant take up whats left by flushing with the right PH. that just my thoughts.