Oooh.... lava rocks... I hear that stuff does wonders for ones Ph level.
doob
PS - I am also making a "level tube" for my setup. I have a half inch elbow tube, half inch rubber grommet, and a foot of opaque blue tubing. I'm going to attach it to the side of the bucket and mark it to tell me how much nutrient I should have in the bucket. Then, when I refill it, I'll just top feed it right through the grow rocks to fill up the bucket with nutes... |