me personally i flush once a week sometime's once every two. as for the build up of nute's i think it depends on what nute's ur useing and how much!
mc-blaze21 Reviewed by mc-blaze21 on . Newbie pH, and flowering questions. About 3 weeks ago buddy popped by with 7 Northern, and 3 Afghani clones, already well rooted, and already zig zaging leaves(I'll bring that up later). Anyways they had to sit in the little rockwool cubes in a 90 degree closet for 2 days while I restocked(it's been a while). It was pretty much a take them or they chuck them situation. Anyways, I got the dryer set up and got them in pots of sunshine mix under a 400 watt MH bulb. We started advanced nutrients, grow, micro, and bloom. Picked up Rating: 5