Looks like the boys have taken care of your questions. I agree 100% with everything Chris and Penny have told you. Regarding the topping off. I run the blue lab guardian monitoring system in my buckets. In veg I usually top off with RO water and adjust the PH if necessary. After the flip the amount that they drink goes way up as they all told you. 5 gallon buckets are almost a must have if you are topping off just once a day.
Topping off after the flip I watch the nutrient levels in the res. Most of the time I have 1/2-1/4 strength nutrient mix to top off. Straight RO will plumet the levels if that is all I used for a week.
I also agree with what Penny and Chris are telling you about DWC and scroging a stand alone DWC bucket. I use one of these to drain and fill my buckets so I don't disturb things too much.
You could fill buckets with this method bu getting the suction end in the bucket would be tough with the net up there.
Topping off after the flip I watch the nutrient levels in the res. Most of the time I have 1/2-1/4 strength nutrient mix to top off. Straight RO will plumet the levels if that is all I used for a week.
I also agree with what Penny and Chris are telling you about DWC and scroging a stand alone DWC bucket. I use one of these to drain and fill my buckets so I don't disturb things too much.
You could fill buckets with this method bu getting the suction end in the bucket would be tough with the net up there.