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What would be a good size filter for scrubbing the air for a 150 plants? Is a 150 carbon filter too big, should I go to a smaller size? And..is it better to recycle the air through, or to exhaust out? If I'm recycling, do I need more air flow?:wall:

:wall: It's my first time with hydro. I need some help. I clean my hydro system once a week and there's still alot of food in my resevoir. Would this be alright to give to my ladies in dirt or should I just discard it? Also, is this too often to be cleaning my system out? Thanks for your help.

Would I be able to flower my plant with 9 hours of sun through a window or should I buy a HPS?

I just got a nuradip pen because I'm going from soil to hydro with my clones. What is a good nutrient level for hydro?

It is my first time growing and everything was going good up to two days ago. I noticed my leaves are starting to curl down and twist off to the right. I water every second day with fertilizer. Am I using the fertilizers too much? And how often should I be watering?