I would say prob a litre of each but not quite sure.
1) dont use those nutes so not familiar.
2) dont want to miss guide you
3) maybe you can be stealthy and ask hydro dude.


Hey scott I just told someone else this trick. Weekly changes just like a normal rez and my trick is a drill pump to suck water out and a transmission funnel for putting it back in. :thumbsup:
tinytoon Reviewed by tinytoon on . quick question? hi everyone, iv done some reading up on hydro, never done it sooo... need to know as im getting my new grow box ready, the question is.. can the roots sit in the water/ferts 24/7??? or do i need a drain to take out every so often? iv read that you have to change the ferts every week?? can anyone help me in this matter?? thanks too everyone that can help. Rating: 5