Doc- Fertilizer salt crud buildup, and bits of algae, dead root that got into the system, etc.
Honestly it's not a big deal and often just flicking the emitter with a fingernail will dislodge the gunk. Don't bother with water sterilizers; instead, run a beneficial bacteria mix, such as SubCulture, in your res.
stinkyattic Reviewed by stinkyattic on . What's the most hands-off method? I was wondering... is there a hydro/aero method or nute schedule that doesn't take much maintainence? I don't want to use soil but I also don't want to have to check pH, TDS etc constantly. Any tips are welcome. Rating: 5