[northernm]

Not yet, but I will do this evening and let you know!

Edit:
Slurry Test pH 4,3-4,4

So the runoff pH of 4,6-4,7 is reasonable, but still i have absolutely no clue what the f*** is going on...
The other thing is, if i measure the Slurry EC with my Bluelab Truncheon it flashes to the max, which is 3,6+!!!
Runoff EC is 0,4-0,5...

Help...

[Miraculous Meds]

Originally Posted by northernm

Not yet, but I will do this evening and let you know!

Edit:
Slurry Test pH 4,3-4,4

So the runoff pH of 4,6-4,7 is reasonable, but still i have absolutely no clue what the f*** is going on...
The other thing is, if i measure the Slurry EC with my Bluelab Truncheon it flashes to the max, which is 3,6+!!!
Runoff EC is 0,4-0,5...

Help...

That means u have a shit ton of nutrient salts built up in ur medium. it also makes sense why the ph is low.

Do ur plants look nutrient burnt? Id flush the hell out of them if so, with .5ec/6.0ph base nutrient, till u get a slurry test measuring around 1.2ec.

If u let ur plants dry too much between waterings, this happens often.

[blueberrydrumz]

Originally Posted by Miraculous Meds

That means u have a shit ton of nutrient salts built up in ur medium. it also makes sense why the ph is low.

Do ur plants look nutrient burnt? Id flush the hell out of them if so, with .5ec/6.0ph base nutrient, till u get a slurry test measuring around 1.2ec.

If u let ur plants dry too much between waterings, this happens often.

yeah you prob feed via chart? best to use half stregth of feed chart
1.2 EC is perfect, flush flush flush and hope they dont get too stressed!

[northernm]

Originally Posted by Miraculous Meds

That means u have a shit ton of nutrient salts built up in ur medium. it also makes sense why the ph is low.

Do ur plants look nutrient burnt? Id flush the hell out of them if so, with .5ec/6.0ph base nutrient, till u get a slurry test measuring around 1.2ec.

If u let ur plants dry too much between waterings, this happens often.

Yeah, salt buit up was the first thing i suspected also, but i already flushed with 2 x potsize...runoff EC is 0,4, pH still at 4,6...

Plants look very dark green, but no burnings at all. Looks like way too much Nitrogen, stretched like crazy and the side branches grow nearly horizontal.

They got watered everyday with at least 20% runoff and i am using ata clean (same as drip clean, which is not available here anymore).

But i will flush her again this evening with ata clean and enzymes...

Sorry that i have no pics now, as soon as the light go on again i will post some!

Originally Posted by blueberrydrumz

yeah you prob feed via chart? best to use half stregth of feed chart
1.2 EC is perfect, flush flush flush and hope they dont get too stressed!

Never fed by the Charts!
After transplanting the clones to their final pots, i fed with 0,8-0,9 EC for a couple of days and after seeing the first roots (and plants indicated that they were hungry) i bumped the EC to 1,0-1,1. This was the maximum they ever got.

They had 7 days veg and are on flowering day 17 now...

[blueberrydrumz]

sounds like you are doing everything right..
what kind of coco you using? the first cycle or you reusing it?
also what kind of water you using, and most important what ph are you feeding?

But maybe best to start a new thread and not clog OP´s thread!!

bless & greetings to the Cook

[The.Cook]

For some reason your coir has drifted to a lower pH than usual.
Beside what caused that drift, I think the safest way would be to just keep up on feeding them with the nutrient solution you want to use...

Dunno about your plant but 0,5 seems quite low.

Also, avoid flushing with ro water as different ions r washed away in different wayS depending on how much they are bonded to the colloids. You wuold end up with a completely unbalanced substrate.
Instead, you can also feed more or more often to keep the substrate "clean" and buffered at the right level. The choice betwen more and more often obviously depends on your plants.

Maybe that can also be related to your findings:

To give you an example, a fully flowering plant handwatered not very often should easely lower pH to a similar value by adsorbing lot of K+ and realising H+ in his place.

[northernm]

Originally Posted by blueberrydrumz

sounds like you are doing everything right..
what kind of coco you using? the first cycle or you reusing it?
also what kind of water you using, and most important what ph are you feeding?

But maybe best to start a new thread and not clog OP´s thread!!

bless & greetings to the Cook

Using a local coco brand, similar to Canna Coco, its the 2nd run with it, so yes I am reusing it.

Using tap water with EC 0,35, pH 8-8,1.
First run I set the pH of the reservoir to 5,8 and let it raise till the rez was empty (about 7 days, maybe to 6,8 or so), this run I was anal about the pH and corrected it as soon as it went over 6,2...maybe I corrected it to often bringing too much acid in (used GHE pH- powder...)?

On Saturday I did another heavy flush (EC 0,5/p H7/H esi Enzymes/Ata Clean), pH was 4,5 after that...but from yesterday on it started to climb, being 5,3 yesterday evening, will check again this evening.

Here are the pics as promised...


You are so right blueberry, sorry Cook for entering this thread, will address my questions in the infirmary

Thanks guys

Originally Posted by The.Cook

For some reason your coir has drifted to a lower pH than usual.
Beside what caused that drift, I think the safest way would be to just keep up on feeding them with the nutrient solution you want to use...

Dunno about your plant but 0,5 seems quite low.

Also, avoid flushing with ro water as different ions r washed away in different wayS depending on how much they are bonded to the colloids. You wuold end up with a completely unbalanced substrate.
Instead, you can also feed more or more often to keep the substrate "clean" and buffered at the right level. The choice betwen more and more often obviously depends on your plants.

Maybe that can also be related to your findings:

To give you an example, a fully flowering plant handwatered not very often should easely lower pH to a similar value by adsorbing lot of K+ and realising H+ in his place.

Thx for the detailed feedback!

I don´t use RO water, but I will put this to my records in case I will use some in the future.
EC 0,5 was only for the flush, they get EC 0,9 and pH 6 now, watered every day with about 20% runoff.

Will do exactly as recommended, will feed them with lower doses more often and see how they like it.

Sorry again for disturbing your thread, you guys helped me a lot!

[blueberrydrumz]

ok, all good.. do a weekly slury test then you know exactly where your medium is at and you just feed accordingly...
i feed between 5.2 - 5.5 as ph rises and my coco is at around 5.8-5.9 all the time... aiming for a 5.5-5.7 in the medium ...
so one just has to go with the flow and feed accordingly.. weekly test keep mishaps at bay
yeah open a new thread... good luck!

[Hundred Gram Oz]

Great thread man, you've pretty much laid down the science to my understanding of how you should grow in coco, smaller pots, multi feeding, etc.

All the Best,
HGO

[WaxyTaxi]

Originally Posted by The.Cook

Quite difficult to answer, really, but I'd say if you'll be able to avoid salts built up you should be halfway through

I have no build up. I hand water with a wand from a 55gl rez that is heavily aerated and kept at pH6.2 w/600-700ppms 60-70degreesF.

Every time I add tea, they seem to go through a rough patch and bounce back. The chemistry here is strange. Wondering wtf is going on in the rootzone and have no clue...still yielding,happy, & making rosintime is getting better by the millisecond