Water issue

[Sour D]

Problem: 2nd week into bloom cycle feeding EC is way up. Plants seem to be thriving but would like to head of any potential issues.

Medium/grow method: 80/20 coco/perlite

Feed: and supplements used: Advanced Nutrients Sensi Coco. 15ml/gal Sensi Coco Bloom, 7ml Big Bud, 7ml Voodoo Juice.

water source:RO and dehumidifier distillate

Strain/age: Humboldt Sour Diesel- middle week 8

light used: 600 wt Viparspectra led

Climate: temp 78-79 RH63

Additional info:

Thanks for your help

 

[Arthur]

Have you checked the ec of the dehumidifier water? Depending on how they condense, metals might be picked up.

 

[Sour D]

Yes I did. It is right in line with my ro. One thing I didn't mention was that during the grow phase, Ph, ec and ppm all seemed to be within reason

 

[Sour D]

Yes I did. It is right in line with my ro. One thing I didn't mention was that during the grow phase, Ph, ec and ppm all seemed to be within reason

Also, yesterday and today I tried nutes at 1/2 strength. Results were better but --- Also I'm using cloth pots

 

[Arthur]

Ok, your in coco, somehow I missed that so pH within reason, what do you pH with?

 

[Arthur]

Being in coco, your medium should be 5.8 to 6.2, all watering should also be withing this range.

What's the medium's pH?

 

[Sour D]

I use one of those stick meters. Ph of runoff? It's been pretty close to the b4 measurement. So consistent I stopped checking it. hmmmmm

 

[Arthur]

Ph of medium, slurry test. What was the before measurement? So far you haven't given a #.

 

[Sour D]

Last 2 days running 5.8 What is a slurry test? I should also mention this is my first grow--sorry

 

[Arthur]

Have you calibrated the meter recently? I have to do mine about every 2 to 3 weeks.

Slurry test I take a shot glass of the coco from a pot, about an inch down, I mix with a shot glass of the water I use, wait about 5 minutes and check pH (carefully don't want to smack a piece of perlite) run off tests tell you what's been flushed out, not what the root zone is doing.