My runoff returns to the reservoir thru gravity is re pumped thru my system and works great. I do refresh my nutes every week or so tho
I use runoff and flush water on my outdoor rose bushes and indoor houseplants...they seem to like it. I wouldn't use it on other mj plants if that's what you mean
What about the salt build up. I'm in coco now is that still okay to reuse runoff. What about if I b used it a day or a week later?