So this is what I'm doing.
The girls are on an 18/6 day/night cycle and they're getting feeds at 17:00 and 05:00 for 3 minutes every day. I originally had it programmed for 2 minutes each watering, but I wasn't convinced the medium was wetting enough. My concern is that while the medium is being topped up by the watering regularly enough, I don't think there's enough draining going on - enough flushing. I'm concerned salts might build up at some point. I have no evidence to suggest that they have, but I'm just feeling that will be the case. I'm thinking now that it might have been a good idea to mix some perlite in with this coco... Any thoughts? I'm also worried about lateral penetration from the drippers. I don't want the water to simply drain down, I also want it to spread too, if you know what I mean.
I'm worried about the roots having access to enough oxygen, but I can't see any runoff happening which says to me the medium is absorbing all of it, which in turn makes me wonder about water-logging at some point.
The system is set up to drain just fine. The coco was put on top of a layer of hydroton, inside a bag. So I know it drains fine. It's just that with 4 x 4L/hr drippers going for 3 mins per pot, I still don't see liquid pouring out into the waste bucket (if I tilt a pot I get runoff though, but only what's left in the outer pot). Not sure what to think.... :-/
Moving right along. As you can see I have a fan in there now, so I'm hoping those two skunks on the right will harden up a bit. They've definitely stretched compared to the other bag-seedlings on the left (they also germed about 4 days after the Skunk too). They (the Skunks) also have a green stem to them, as opposed to the darker almost purple stems on the left ones. I'm hoping against hope those Skunks aren't both male, as I hear they stretch more than fems do. I know it's far too early to tell so I'll just sit tight and keep treating them like princesses.
Anyhoo, pics will be up in a jiff.
PS. In the third pic you can see how much the fan is sucking in the tent's sides. It's a doosey!!! I imagine if/when I have a charcoal filter on it that that will no longer be as pronounced.