I have been growing for a while using DWC bubbler buckets. After a lot of research I decided to build a undercurrent DWC system. I went to my local grow shop to try to find some larger square buckets and ended up purchasing this: This was a slightly used Current Culture System 4 they sold me for $200! I reasoned that I couldn't buy the parts to build a system like this for that cheap. So, I got a great deal. I do have a question. For those of you that are using or are familiar with these systems, the system came with an Ecoplus 185 pump. You can see this in the picture to the right of the larger air pump. This seems a little small to me. I do have a larger pump that I could use on the system but if this one will work, I will just use it. Any thoughts?