I have an 8 ft 300 gal FOWLER viewable from three sides. I have one Penductor on one end and the flow from that one makes it almost to the other end. The other two are in more in the middle pointed towards each end. I'm not sure what to tell you regarding the size of the Penductors. They are black, about four inches long and I'd say the bell is about an inch and a half across. The locline is more like 7 inches long but I have four of them. I also have the pliars. For those interested in buying them or the pumps, Email me at
B4UWheeze@Yahoo.com. When I get things changed out next week and I'm happy with the water movement we can discuss a price.