nutrient rocks are made out of clay and go around the grown medium which is the rockwool cubes. r
You mean hydrotone? The expanded clay pellets? It has no nutrients in it.
No need to burn your plants on purpose lol just make a note to what your ph and ppm is doing.
I would stick with soil if I were you.
btw, the reason you want the ph to naturally drift from 5.6-6.2 is because different nutes are accessible at different ph levels mmmk.
did you miss the rest of my post?
here it is again~
Iv never used rockwool before but I think it alters the ph and you have to compensate for it maybe.
Im on my second hydro grow but noticed that when the nute levels are to high the ppm will eventually rise and the ph willl drop. You want the ph to naturally rise from 5.6 up to 6.2 and then slowly bring it back down to 5.6, you also wnat your ppms to slowly be dropping. There seems to be a sweet spot where the ppm stays the same but the ph rises, but they will continue to need more nutes until they peak... they can only take so much and each strain varies in feeding habits. Just what Iv noticed.
h2o temps are important too. you want them between 65-70
So if you notice your ppm raising and ph dropping, just dilute with dechlorinated water ph'd to where you need it atm.
follow the feed chart but dilute as needed.