1st grow - needing help

[Lil Dab]

Thanks for the support. its difficult learning the steps but fun. i've had them both up to a half litre a day (500mL). the new pots alot bigger than advertised, i thought i was getting about 3 gallons. i think they're about 5 gallon maybe about 20L-22L possible dont have much coco left off of 100L at all.

So i guess i may need to use 1 gallon per pot then to get run off? the lights come again in about 6 hrs. will i need to work up to that amount or can i just start putting it in?

I think so but if your coco is getting that dry you may need to fertigate more often it shouldn't take more then 10% of the volume to get runoff... Or here is worded better copy and pasted from cocoforcananbis.com


Water Quantity is Determined by Run-off
The number one rule for watering coco is that you should always provide enough nutrient solution to each plant to produce 10-20% run-off. That means that if you add one quart of water then 10-20% of that quart should end up as run-off. Run-off water plays an important role in maintaining healthy conditions in the root zone. Therefore, you need to always get run-off no matter how much water you must add in order to accomplish that.

Under high-frequency fertigation, the quantity needed to produce run-off should be small. As I explain in “Growing Cannabis in Coco with High Frequency Fertigation”, it is ideal to keep the coco between 90 and 100% saturated all the time. Therefore, when we water in coco, the coco is already 90% saturated and it cannot hold much more. As discussed further below, the ideal quantity of water per event is about 5% of the volume of the growing container. This is ideal, but the rule is that you need to always provide enough water to actually produce adequate run-off from each plant.


By Volume of Water Needed:
Coco mixed with perlite has the ideal air to water ratio when it is 90%-100% saturated. This means that when the coco has lost 10% of the water that it can hold you should water again. Since water is about half the total volume of saturated coco, the amount of water required should be about 5% of the container volume.

As an example, in 5 gallons of media, it should take about 1 quart of water to achieve adequate run-off. This is less water than most growers assume. Quantities are small because frequency is high. Since you are never giving the coco an opportunity to dry out, there is never going to be much capacity for it to hold more water.

If it takes more than 5% of the container volume to produce run-off, it means that the coco has become too dry. The best remedy is to water more frequently. In coco, it is always better to err on the side of watering too much than not watering enough.

By Monitoring EC:

 

[cookiemonster85]

I think so but if your coco is getting that dry you may need to fertigate more often it shouldn't take more then 10% of the volume to get runoff... Or here is worded better copy and pasted from cocoforcananbis.com


Water Quantity is Determined by Run-off
The number one rule for watering coco is that you should always provide enough nutrient solution to each plant to produce 10-20% run-off. That means that if you add one quart of water then 10-20% of that quart should end up as run-off. Run-off water plays an important role in maintaining healthy conditions in the root zone. Therefore, you need to always get run-off no matter how much water you must add in order to accomplish that.

Under high-frequency fertigation, the quantity needed to produce run-off should be small. As I explain in “Growing Cannabis in Coco with High Frequency Fertigation”, it is ideal to keep the coco between 90 and 100% saturated all the time. Therefore, when we water in coco, the coco is already 90% saturated and it cannot hold much more. As discussed further below, the ideal quantity of water per event is about 5% of the volume of the growing container. This is ideal, but the rule is that you need to always provide enough water to actually produce adequate run-off from each plant.


By Volume of Water Needed:
Coco mixed with perlite has the ideal air to water ratio when it is 90%-100% saturated. This means that when the coco has lost 10% of the water that it can hold you should water again. Since water is about half the total volume of saturated coco, the amount of water required should be about 5% of the container volume.

As an example, in 5 gallons of media, it should take about 1 quart of water to achieve adequate run-off. This is less water than most growers assume. Quantities are small because frequency is high. Since you are never giving the coco an opportunity to dry out, there is never going to be much capacity for it to hold more water.

If it takes more than 5% of the container volume to produce run-off, it means that the coco has become too dry. The best remedy is to water more frequently. In coco, it is always better to err on the side of watering too much than not watering enough.

By Monitoring EC:

thanks, i'll start off with a litre (quart) and if theres no run off i'll slowly add more until there is the 10-20%

Edit/Update ---

made up a gallon for them. added:-

0.8 mL - Silicone
4.8 mL - Mirco
7.2 mL - Grow
2.4 mL - Bloom
8.0 mL- Diamond Nectar
700 ppm - Ph in 5.8

Guess I didn't make up enough. 2 quarts each - coco looking all good. very minimal run off - not enough to measure anything. i'll try again tomorrow.

 

[Lil Dab]

thanks, i'll start off with a litre (quart) and if theres no run off i'll slowly add more until there is the 10-20%

Edit/Update ---

made up a gallon for them. added:-

0.8 mL/L - Silicone
4.8 mL/L - Mirco
7.2 mL/L - Grow
2.4 mL/L - Bloom
8.0 mL/L - Diamond Nectar
700 ppm - Ph in 5.8

Guess I didn't make up enough. 2 quarts each - coco looking all good. very minimal run off - not enough to measure anything. i'll try again tomorrow.

Yup or even at the end of the day do the same and see if you get more runnoff that time but If it were me I'd make a little bit bigger batch 3-5 gallon and use that over the course of a couple days

 

[DCLXVI]

excellent advice from @Lil Dab ! The nice thing with coco is that you really can't overwater. Go until runoff and start keeping track of how much it takes. Also, check the runoff ppm/ec. If it''s higher than input you can always just flush more through until it drops back where you want it.

EDIT: My big bastard photoperiod is in a 1.5gallon airpot and needs 8L of water a day to keep the runoff ppm in check. I do fertigate 4 times but I am semi-retired and home futzing around a lot.

 

[cookiemonster85]

yeah, i ve made up a big batch of it now. So ran them again with same as above 700 ppm ph 5.8. a quart in both again.

Strawberry cheesecake - 100 ml ec out 700 ppm ph 6.2
Critical kush - 200 ml ec out 850 ppm ph 6.0

i'm gonna wait till near end of day and try the Critical again and see if its lower.

couple of the leaves on the cheesecake are going slightly pale in places should i be worried? is it maybe lack of mag?

 

[cookiemonster85]

Question re ppm. what sort of range am i looking for at max? read so many different things online about it. would 900 ish be a good goal? ive had these 2 on 700 ppm for a few feeds should i be increasing now?

 

[DCLXVI]

Collect your runoff and test the ppm there.

If you are putting in 700 and the runoff is 600, increase a little bit.

If you are putting in 700ppm and the runoff is 1000, decrease strength.

Coco lets you know what the plants are doing and using.

My current auto run has been going in at about ~700ppm and should probably have been a bit lower.

 

[Lil Dab]

looking good I run anywhere between 500-700 ppm tds factor .5

 

[Don Manzoni]

Question re ppm. what sort of range am i looking for at max? read so many different things online about it. would 900 ish be a good goal? ive had these 2 on 700 ppm for a few feeds should i be increasing now?

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Hello you should definitely check this out

Tutorial - A word on Nutrients

The proper use of “salt” based fertilizer to grow Auto Flowering Cannabis. Salts: Natural and man made any chemical compound formed from the reaction of an acid with a base, with all or part of the hydrogen of the acid replaced by a metal or other cation. Learning how to use salt based...

www.autoflower.org

 

[throwstuffatme]

your girls are up and running now happy growing.