Have you considered running drip-to-waste from a res of corrected water, and allowing 10% runoff at all times? =Constant mini-flushes.
The color may be from the coco or from your nutes. Some nutes are just really dark, like canna and pureblend. Most likely it's a combination. I'd get in the habit of watering to runoff every time you water, and if that means propping up the pots over a catch-tray, so be it.
stinkyattic Reviewed by stinkyattic on . Coco and colored run off This is what is going on and it saves me alot of time since nap time is over soon. http://boards.cannabis.com/plant-problems/156710-lockout-hard-water-rain-water-choices.html I have been collecting rainwater for flushing and using Ro water and 1/4-1/2 nute to feed. I flush equal amounts of water to soil every time I water and feed right now which is about twice a week. If the water comes out colored I flush at least double or until the water runs clear and pH matches, then lower the feed. Rating: 5