so I searched the forums and didn't see any post's about rdwc setup's. I want to take my 12 site DWC and turn it into RDWC. I will use 2x 30gal trash cans, 1 for res that's connected to the 12x5gal buckets, 2nd trash can to use for auto topping res tank. I will use a 1/2hp water chiller. I guess biggest question is what size and type of water pump should I use for good water circulation, and 2nd connecting all buckets in series and back to res correct? do I just use water chiller as a inline out of res then into buckets, or inline out of buckets then into res, or just out of res then back into res. Thanks in advance.