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a friend of mine told me that i should replace the water/nutrients and clean the buckets every two weeks... if my plants are under a scrog i dont see how this is possible.
Doesn't need to be every two weeks. Clean em out after each batch is fine.
-------------------- All creatures tremble when faced with violence. All creatures fear death, all love life. If we can only see ourselves in others, then how could we possibly hurt another creature?
Depends on how good you are at reading your plants. I find that after two weeks my PH no longer stays where I want it and I have to chase it all around with PH down. Its also more prone to nute deficiency and imbalance if you use the same nutes for more than two weeks. But with that said, some people can go an entire grow and only change nutes once when they switch into flower. If this is your first time with DWC stick with changing water every two weeks then next grow try three and build up to it with more experience. Good luck!