Peat moss in regards to high frequency fertigation.

M

Maineconnect

Active Member
So pretty solid grower in coco coir and also with re amending outdoor container gardens....
I’ve joined the corporate cannabis world and man sometimes it’s stressful and not for the faint of heart.
I have a question I’m hoping some knowledgeable growers will give input on and that is Can I manage a pro mix garden the same way or similar to the way I would manage a coco coir run in regards to fertigation?
How do the two mediums act differently coco & peat moss?
Right now at the facility I work at we are in 20 Gal finishing containers
Multi strain rooms under gavita s with a splash of cmh 1500 ppm co2 high temp 85 low 65 rh high 45 low of 30 house and garden coco base nutes as well as all additives expect top shooter I believe max feed 1500 ppm on a 500 Conversion. We feed feed flush and maintain a solution in ph of 6.5
We are constantly having def/tox in flower rooms and even in veg and I’ve only been a grower here for a month now but I know were not feeding efficiently as NO inflow outflow numbers have been logged from past grows in this facility and we use house and garden APP and cut base in half ....

If there’s any OGs who can school me on how to manage and monitor uptake in promix I’d greatly appreciate any insight.
Thanks everyone
Happy holidays
 
70's natureboy

70's natureboy

Well-Known Member
Shouldn't be a problem. We have lots of threads with problems in coco but not many threads with problems with Pro Mix. 1500 is very high in my book. When you flush 20 gal buckets they must be heavy as hell. How long do they take to dry out?
 
M

Maineconnect

Active Member
every watering we’re pushing 4 gallons through these 20 gallons and with our humidity high 45 low around 30 we are typically getting 3 irrigation’s one a 7 day period.
I agree 1500 to high especially on feed feed flush I’d dial it back to around 800 maybe even 750
Monday feed 800 Thursday feed 800 Sunday flush
 
M

Maineconnect

Active Member
i feel like If there’s a way I could manage my root zone ec similar to coco and skip flush days as long as I get enough run off for each individual feed and my inflow solution and outflow solution don’t vary much
 
D

DaFreak

Well-Known Member
I don’t flush at all in promix. Been growing over 20 but started using promix about a year ago so probably like 15 cycles or so. First cycles I did flush because thats what my research told me to do but now I don’t. I keep my ppms around 800 now
 
Boatguy

Boatguy

Well-Known Member
DaFreak said:
I don’t flush at all in promix. Been growing over 20 but started using promix about a year ago so probably like 15 cycles or so. First cycles I did flush because thats what my research told me to do but now I don’t. I keep my ppms around 800 now
Click to expand...
Really? I always stuck to the water, water, feed regimen in promix.
Thought the idea was to flush out the residual nutes the plant didnt uptake between feedings
 
D

DaFreak

Well-Known Member
I feed everytime and make sure to get run-off, almost 30%. In that way I am "flushing" with every feeding but keeping it where I want it.
 
M

Maineconnect

Active Member
DaFreak said:
I feed everytime and make sure to get run-off, almost 30%. In that way I am "flushing" with every feeding but keeping it where I want it.
Click to expand...
What size containers do you finish in and what’s the rooms high and low humidity swings to be feeding at 800 ppm.
trying to gage that info against my own room.
20 gal finishers with high 45rh low of 30rh
 
M

Maineconnect

Active Member
If I’m feeding every watering am I looking for my inflow ec to match my outflow ec same as I would look for if growing in coco coir?
 
D

DaFreak

Well-Known Member
I am small time using 5 gallon pots every 3 days or so running low 80s on and mid 60s off. Humidity between 45 and 50. Starting tap is 44ppm
 
M

Maineconnect

Active Member
Your environment sounds more dialed in then ours and our facility is fairly large and well funded lol oh man..... Crazy to think we are in 20 gallon finishers and are going to be dialing back nutes to only 100 or so ppm higher than your 5 gallons...
Environment environment environment ....
Also we’re not amending with perlite so that’s probably why we’re only getting around 5-10 percent runoff tops
 
70's natureboy

70's natureboy

Well-Known Member
Maineconnect said:
Your environment sounds more dialed in then ours and our facility is fairly large and well funded lol oh man..... Crazy to think we are in 20 gallon finishers and are going to be dialing back nutes to only 100 or so ppm higher than your 5 gallons...
Environment environment environment ....
Also we’re not amending with perlite so that’s probably why we’re only getting around 5-10 percent runoff tops
Click to expand...
DaFreak is probably giving his plants 1 gal per pail and your big trees will need 4 gal per pail so they are getting four times the nutes at the same EC.

.
 
Kassiopeija

Kassiopeija

Well-Known Member
Maineconnect said:
How do the two mediums act differently coco & peat moss?
Click to expand...
peat moss incorporates less oxygen than coco so flushing it is a bad idea to begin with, because it'll diminish some of the atmospheric transfer which it the roots do. Granted, big plants can tolerate that better.
Allow a min. of 20% runoff to waste if feeding mineralic to thwart off salt builtup.

Settle for an EC you can feed with every fertigation. Allow pots to get a little more dryer than Coco about 40-50% loss of water shouldve been taken place before re-fertigation. Otherwise you risk root-root.

Actually the advantage of soil is having less frequent fertigation intervalls (less work) and thats needed to get air back into the inner part of the pot. Using H2O2 will also help greatly if using mineralic food.
 
M

Maineconnect

Active Member
Kassiopeija said:
peat moss incorporates less oxygen than coco so flushing it is a bad idea to begin with, because it'll diminish some of the atmospheric transfer which it the roots do. Granted, big plants can tolerate that better.
Allow a min. of 20% runoff to waste if feeding mineralic to thwart off salt builtup.

Settle for an EC you can feed with every fertigation. Allow pots to get a little more dryer than Coco about 40-50% loss of water shouldve been taken place before re-fertigation. Otherwise you risk root-root.

Actually the advantage of soil is having less frequent fertigation intervalls (less work) and thats needed to get air back into the inner part of the pot. Using H2O2 will also help greatly if using mineralic food.
Click to expand...
Rock solid information.
Thank you.
Let medium get drier than coco
Fertigate every watering allowing 20 percent run off with an established EC based on size, uptake etc
Don’t flood containers when establishing young plants.
Large plants with larger root systems obviously able to handle more water

should I run my ph soil 6.0-6.7 or coco 5.8-6.1


Happy
 
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