What ph should runoff water be?

chemphlegm

chemphlegm

Well-Known Member
@ MichiganMedGrower
alright man, you're off the hook.
Nice plant btw, what kind of bulb is it growing under in the pic?:bigjoint:
 
since1991

since1991

Well-Known Member
Dr. Who said:
The Hanna Instruments HI99121 meter w/the proper pre-amplified probe is my choice. Brace your wallet..... We use 2 of these on the farm...... I don't have time to do slurry test's on fields. You meter the fields in many places, or a few. It depends on what was in the field and what is going in the next spring....... Container to container metering is made much simpler...With a meter...
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Hanna has a newer one out I was checking online last night. The Hanna Groline HI9814. A pH/EC/& temp meter. The probe is all in one with a shorter cord. Ive had a Bluelab Combo forever thats sweet but I can't stand the seperate EC and pH probes with the long ass cords. Always getting tangled. It's a nice meter though. Got the Bluelab case for it as well. Simple to operate. Simple to calibrate. But this Hanna Groline looks to be the bees knees for about 250$. The automatic shutoff can be programmed to your liking..the Bluelab just shuts off after so long..and ususally in tje middle of me setting a tank. Not a big deal but its a nuisance. The Hanna Groline even comes in a kit with a cool green rubber case like a cell phone. And the kit comes with all the cleaning and storage satchets. And the calibration can be done regular way or a one step process with one satchet for both pH and EC calibration. I would like to have 2 meters anyways. One for the veg room and one for the flower rooms. Plus it's nice to have a couple quality meters together to see how they both read with a fresh solution sample test for accuracy. I dont really fuk with testing runoff or substrate slurry tests..maybe once in awhile I will stick the EC probe into some rockwool or coco runoff to get an idea of the buildup salt EC I want out of there (if runoff EC is 0.2 to 0.4 higher than target on my return and plants look healthy I just keep chugging with my normal runoff routine). But its not often...only new strains maybe that I dont know yet. I kinda have a method where I know ballpark whats coming out from what I put in and whatnot. Been doing it for so long with my keeper cultivars. I know em like the back of my hand. But I do rely heavily on my Bluelab for all my nutrient solution makeups. Stock tanks..refills and resets. You know what Iam talking about. And this new Hanna Groline..I have a spot in my systems for its use.
 
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Daveindiego

Daveindiego

Well-Known Member
Need some help, topic and my conditions are confusing me.

I’m growing indoor in Coco. My plants have gone to shit at week 6 on me. @Dr. Who identified a pH issue which I addressed by reducing my pH from 6.3 to 5.9.

I talked to my hydro shop guy, and he recommended checking my PPMs runoff for change, and I did that, and while I was there, I checked the pH.

WTF is going on here?

I just poured 2000 ml of 6.0 pH and 894 PPMs nutrient mix, and my runoff is
5.3 pH and 1625 PPMs.

Again, WTF?

And this is my good plant.
 
Daveindiego

Daveindiego

Well-Known Member
Just watered another set of plants.

Poured 6.0 pH at 1300 PPMs.

Got 5.8 pH at 1837 PPMs.


This was a plant that I ‘leeched’ or ‘flushed’ 2 days ago to get the PPMs from 8466 PPMs to 350 PPMs.

What is going on?


edit: yes, I typed out 8466 PPMs, which is what I measured this at 3 days ago. Not a typo.
 
zac graves

zac graves

Member
Daveindiego said:
Just watered another set of plants.

Poured 6.0 pH at 1300 PPMs.

Got 5.8 pH at 1837 PPMs.


This was a plant that I ‘leeched’ or ‘flushed’ 2 days ago to get the PPMs from 8466 PPMs to 350 PPMs.

What is going on?


edit: yes, I typed out 8466 PPMs, which is what I measured this at 3 days ago. Not a typo.
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I'm still a newb too but they'll probably roast you if you don't have pictures. Take one of the whole plant and another one where the leafs look like butt
 
Daveindiego

Daveindiego

Well-Known Member
zac graves said:
I'm still a newb too but they'll probably roast you if you don't have pictures. Take one of the whole plant and another one where the leafs look like butt
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Lulz. This place does get quick to roast.

I actually made a thread about this the other day, and basically got nothing in response. Funny. I kind of consider my issue to be a low level intermediate problem. Something that would be a decent topic of conversation. I dunno. They sure do like to fight about ‘flushing’ though.
 
ANC

ANC

Well-Known Member
Coco takes a LOT of water to leach. That is why many growers only use like a 3rd of the volume in coco and chunky perlite the rest.
 
Daveindiego

Daveindiego

Well-Known Member
ANC said:
Coco takes a LOT of water to leach. That is why many growers only use like a 3rd of the volume in coco and chunky perlite the rest.
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I poured 8 gallons in my 3 gallon pot. The next day I did the same for different plants, but added a finisher gallon of nutrient.

My pots are 75% coco, 25% Perlite.

I have been consistently feeding at half recommendation of nutrients.
 
since1991

since1991

Well-Known Member
Daveindiego said:
An then my last set.

Mixed/poured
5.9 pH at 845ppms.

Runoffs
5.9 pH at 1340 PPMs
6.1 pH at 1670 PPMs.
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You have salt build up in the substrate medium from heavy fertilizer application feeds. All that salt is dropping your pH as well. Typical situation and an easy fix. First off..while not knowing your exact conditions and situation..(what is your conversion factor from EC to TDS/PPM? Is it 0.5 or 0.7 scale??? ) We gotta know that first before we give you a solution or advice.
 
since1991

since1991

Well-Known Member
Daveindiego said:
Lulz. This place does get quick to roast.

I actually made a thread about this the other day, and basically got nothing in response. Funny. I kind of consider my issue to be a low level intermediate problem. Something that would be a decent topic of conversation. I dunno. They sure do like to fight about ‘flushing’ though.
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Yours is a common problem (salt build up from not enough runoff/heavy fertilizer/nutrient solution application) and an easy fix. Tell me which conversion your using for your ppm numbers???
 
chemphlegm

chemphlegm

Well-Known Member
I wonder if we all looked up the most troublesome substrate(coco) and a nutrient system with the most complaints(FF) to begin our first gardens?
Life got so much easier after those choices were rectified. my ph pen went on the shelf for good, no more deficiencies, no more overfeeding, no more coco and no more foxfarms goshdammit!
 
legalcanada

legalcanada

Well-Known Member
chemphlegm said:
I wonder if we all looked up the most troublesome substrate(coco) and a nutrient system with the most complaints(FF) to begin our first gardens?
Life got so much easier after those choices were rectified. my ph pen went on the shelf for good, no more deficiencies, no more overfeeding, no more coco and no more foxfarms goshdammit!
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i'm confused, coco is far more forgiving and easier than soil. you can fix any problems easily by just continuing to feed until what comes out the bottom is the same as what's going in the top, without worrying about overwatering. i recommend coco to all beginner growers. much easier and more forgiving than soil by far.
 
Daveindiego

Daveindiego

Well-Known Member
chemphlegm said:
I wonder if we all looked up the most troublesome substrate(coco) and a nutrient system with the most complaints(FF) to begin our first gardens?
Life got so much easier after those choices were rectified. my ph pen went on the shelf for good, no more deficiencies, no more overfeeding, no more coco and no more foxfarms goshdammit!
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I’m about ready to throw the entire House and Garden nutrient line AND coco in the garbage.

Part of the reason I started in Coco was I was told it’s an easier medium to work with for beginners.
 
Daveindiego

Daveindiego

Well-Known Member
legalcanada said:
i'm confused, coco is far more forgiving and easier than soil. you can fix any problems easily by just continuing to feed until what comes out the bottom is the same as what's going in the top, without worrying about overwatering. i recommend coco to all beginner growers. much easier and more forgiving than soil by far.
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:jj:
 
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