tobh
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Don't worry about getting root bound in coco. Nor worry about overwatering. In fact, a lot (including myself) agree that the more dense the root structure the better yields you can achieve in coco. The more dense the root structure becomes, the more often you can feed as well. For instance, this run I haven't moved from solo cups at all. Rooted in the same container they're going to be harvested from. The transplant with the layers wouldn't be difficult. If I followed his post correctly, he's essentially setting it up as a hempy pot without the 2 inches of perlite in the bottom and instead uses chips or similar texture coco. Actually sounds like a good thing to do, if you can swing the funds.
I clone with no dome in an environment that averages <30% RH in coco. No issues what so ever. Imo a dome just adds to the potential of damping off. If a clone is gonna die on me, I rather it die from getting too dry than it dying from being too humid. Also helps to not deal with the transition of environment from being in 90% humidity to ~50% humidity. No hardening off period. Imo they throw roots faster without a dome because they realize they're losing water, quickly. So if they want to survive they better get some roots down, or die. Survival of the fittest is my logic here.
What if your pH is consistently coming out around 5.0 with your feed going in at 5.8. @ 400 ppms' ?As ClassV said, if you are only watering once a day make sure to be feeding a 1/4 dose solution once a week. Runoff pH is highly inaccurate though. The recommended method of checking medium pH is through a slurry test. There are simply too many variables that can alter the pH as it moves through the medium so it's best to go with a slurry test for an accurate reading.
I typically don't worry about it too much unless the plants look like they an issue. 5.5 is a fine pH occasionally for your solution, just make sure to not hold it there consistently. It unlocks too much availability to N which will then have potential to lock out other nutrients. This is where reading Seamaiden's thread about nutrients comes into play as it explains some of the other variables that come into play when having such control over your plant's growth.
On the note of such low pH, most people in coco consider this to be too low. Most times you only see this in full hydro systems. I personally treat coco as a hydro medium so I find it to be somewhat beneficial in early veg to use such pH. Also in the first week of flower I'll feed in this range a couple times. But for the most part I try to go no lower than 5.7 and no higher than 6.0 for my solutions.
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