Rhizogenic
Member
Most who choose to grow in coco seem to use a drain to waste system. The clear benefit is the decreased chance of salt build up, but if you're running a larger system you have to have a lot of water to do that. My well water is already at .7mS and RO water is limited for a couple of reasons. So, I'm left with recirculation as my best option.
My set up:
-8, 25gal bins in the top level of the bulding
-1, 50 gallon res on the bottom floor with a sump pump
- each tub is fitted with spray bars coming off the main feed line with valves for individual pressure control
- 6, 1000 watt lights on an inline vent system, roughly 4.5 feet above the tubs
- plants are Hazeman's hippie headband, under a scrog, looking good 4 weeks in bloom
- Dutch Master gold line nutrients with zone added 3 weeks into the grow due to an off smell detected in the return runoff (smell is gone now, zone works)
My questions:
- For those of you that have done coco recirculation what nutrients do you choose and why?
- How often do you flush to prevent excess salt build up and with what flushing product?
- Do you run a nutrient solution up until harvest or flush near the end with a smoother smoke in mind?
- Do you find the need for additional cal/mag even with nutrient lines that already have it?
The nutrients are what I'm most curious about. Is there is a line that is more prone than others to build up in a recirculation system. I may run House and Garden next time as I've had good results in drain to waste. So far Dutch Master has to be used at a way lower concentration than anything I've seen or read (.7mS right now). If I raise it I get signs of over feeding. If I fed at the rates the company advises (2.0mS and higher) my plants would be dead in a week...
My set up:
-8, 25gal bins in the top level of the bulding
-1, 50 gallon res on the bottom floor with a sump pump
- each tub is fitted with spray bars coming off the main feed line with valves for individual pressure control
- 6, 1000 watt lights on an inline vent system, roughly 4.5 feet above the tubs
- plants are Hazeman's hippie headband, under a scrog, looking good 4 weeks in bloom
- Dutch Master gold line nutrients with zone added 3 weeks into the grow due to an off smell detected in the return runoff (smell is gone now, zone works)
My questions:
- For those of you that have done coco recirculation what nutrients do you choose and why?
- How often do you flush to prevent excess salt build up and with what flushing product?
- Do you run a nutrient solution up until harvest or flush near the end with a smoother smoke in mind?
- Do you find the need for additional cal/mag even with nutrient lines that already have it?
The nutrients are what I'm most curious about. Is there is a line that is more prone than others to build up in a recirculation system. I may run House and Garden next time as I've had good results in drain to waste. So far Dutch Master has to be used at a way lower concentration than anything I've seen or read (.7mS right now). If I raise it I get signs of over feeding. If I fed at the rates the company advises (2.0mS and higher) my plants would be dead in a week...
