Avast Marine
.Registered Member
Couple questions about plumbing..... What are you using for the pump5 and pump8? Could you just use a bigger pump8? If you have to use two pumps I would consider putting both of them in the location of pump8. It seems like your going to be drawing a whole lot of air into the suction side of pump5 the way you have it drawn, with the skimmer return and the main tank drains, auxiliary tank drains etc. all in that one drop of the sump.