ttystikk
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Can you tell me some of the major issues you had with your original system. I'm trying to do the exact same thing and would like to avoid any pitfalls. Thanks.
First and foremost, unless you have plenty of hydro experience already, don't run an RDWC. You don't toss Jr. the keys to the Ferrari to go take his driving test, right? Start w/ coco and make sure you have a firm grasp of the basics. Here's why:
RDWC makes everything happen faster, both the growth (good) and problems (bad!). Think of it as a 'dynamically unstable' system- unless you're constantly making corrections, the natural course of events in RDWC is to go out of balance- and not necessarily always the same way.
If your nutes are off the plants suffer; if they're not matched to the environment, your plants will suffer, and if you're not using nutes specially designed for RDWC, your plants will more than likely suffer.
I could go on, but pure RDWC is not a beginner's tightrope walk.
I'm spending a lot of time slowly and deliberately investigating the possibility of running a combination RDWC and coco substrate. So far, the early results look good; each style complements the other, so that there is less instability in the system. I have a long way to go to be able to make any specific recommendations, however.