1. How often does the water need to be changed in a res?
I change when my Res is empty ...
2. What will produce a higher yield? I'm not looking for crazy numbers but the more the better.
Depends on so many facotrs ,Thats so hard to anwser properly
3. Would one be better than the other if growing in a small area like a closet?
Aeroponics But again very hard to anwser ...
4. Overall which would be cheaper?
Hands down Soil
Cheers&Peace
