n00604173
Well-Known Member
u CAN just refill, but then whatever's in there gets mixed in with your new nutes. i start out with a full res of my nutes, and then refill with plain water for a week. after that week, i empty and rinse the res, and then refill with my next stronger nute solution and repeat the process. you can let it go more than a week or whatever...i just like upping my dosage every week and i'm trying a quick grow...