Hi Doc, on advise, I've been reading your journals, great stuff. I have a quick question, a couple pages back, you refer to "monsoon watering", and I wondered how much water you use.
I'm growing in 3 gal. geopots with soil and OC+ and put a gallon of water in, with about 20-25 oz. run-off and then put another 1/2 gallon in for good measure. Is this enough to move some of the nitrogen out or should I use more.
Just for the fun of it, I weighed them before and after watering and have a 6.5-7 lbs. weight gain with the retained water.
I'm not saying YOU should do this.....but this is what I did up until about the 6th week of bloom:
On watering day, crank up the humidity to 80%, about 6 hours prior to lights on. When the lights come on, crank DOWN the RH to normal 50% and water each pot with 2-3 times the volume of the pot. In your 3 gallon pots, that means 6-9 gallons of water.....massive run-off.
Basically, it's a flush every time you water. I was able to grow very large, healthy plants in small containers.
Now, with all organics, I don't flush every time I water, but about every 3rd. time. I always add organic matter back in, depending on the plant's needs, so the nutrients aren't totally leeched out.
But with OC+, let 'er rip! You can always modify the monsoon technique....maybe do it every other watering, and alternate compost tea, vermi tea, molasses/sucanat in between rainstorms.
2 tips with OC+: watering with cold water will release less nutes than with warm. So, if your grow room is getting hot.....find a way to use cold (60-65 degree) water.....this will keep a large amount of nutes from dumping and keep your roots happy.
Also, turning the temps down to a daytime high of about 72-73 will decrease the rate of release. These low temps, coupled with low humidity will increase resin production AND make a bit of purpleish coloring.....not a bad thing at all!