Hey guys. Been a while since I've been on here, and I'm growing in coco right now after switch from soil last grow. Basically my plants (DJ short blueberry) haven't done much since being planted Sunday (5 days). They were well rooted clones in those roots plugs. Using Canna coco cut with 30% perlite. They're drip fed, 2 1/8 spagetti lines per pot closer to the perimeter of the pots, which are 2 gallon smart pots. I've only watered them twice in an attempt to let them root out a bit. Going pretty light on nutes ~70% 6/9 head formula, w/ ~3ml/gal calmag and a bit of h2o2. I don't currently have a EC meter, pH is 5.8. Using tap water which should be ~200ppm (from other grower). They're under 1000w hps which is currently about 3' away to reduce light stress. Temps average 75*F, 50% rh. Basically the plants seem to be stalled, and a few have a bit of wilting going on. It's not underwatering, and I don't think it's overwatering. These plants should be taking off, so it's pissing me off a bit. Any ideas? Thanks for any help.
I'm thinking it's probably something to do with my nutrient profile, so on the first three plants closest to the door, I tied off the drip system and will run 6/9 without calmag, pH 5.8 to see if anything changes. I might end up getting some canna a and b to see if that makes any difference as supposedly it is formulated for use with tap water. Any other suggestions?
Just because they aren't growing upwards doesn't mean they aren't growing. I would move to a hand fed system. If your coco was not rinsed before you planted into it then the salt content could be too high. This will stop root growth in its tracks. A good rinse followed up with a mild feeding will establish a good charge in the media. Increasing the humidity to 70-80% will reduce transpiration stress also, try the inexpensive Vicks humidifiers found at a local drug store.
Thanks for the input SCMC. I have been handfeeding the front three plants with a solution that doesn't have calmag to see if plants would improve at all. I have also began watering every day. I didn't wash the coco out since it was canna, I assumed such an expensive brand wouldn't need it? Nonetheless I have been watering to excess to get extra drainage. Good call on the humidifier, I just got one on amazon. It only holds a gallon so I might end up returning it but we'll see how much it'll notch up the humidity. I've been trying to increase it by pouring water on the ground, but have only been able to increase it to ~55.
If your running tap water, cal mag not might be needed as tap water has calcium in it. From what I know the cal mag is mostly used for guys that run RO unit. Also if that little fan is all you got it might be best to get one or two more. If I know it has nothing to do with climate and my babies are stressed I usually will flush right away. It will never hurt.
Seems to have just been transplant stress, they went under the HPS too quick. Here's a link to them now http://forum.grasscity.com/hydropon...-4x4-coco-drip-w-heads-formula-tap-water.html