ok i have some news for ya on these big pumps.
notice i did not say little pump. I have a source that is workng directly with hydor, hence they already have these pumps, not for sale, just to see how "they" like them.
CONS: pumps are very large vs. gph pumped, they all rattle on start up banging against the stopper a half dozen times. are very large. mounting mechanism lacks in compactness, protrudes into the tank a good bit. shroud is extremely large for size of the prop. Are 120v so they wont work on tunze multi controller. would have been great to make then dc pumps, then a good speed controller could be made.
PROS: good low electrical draw for whats used. nice wide flow pattern. mag mount & internal suction cup, so if the outside mag falls off the pump doesnt instanly fall. dead silent once spinning proper way.
ok thats all i can think of off the top of my head, will have to observe more when i go back my company X's shop today or tomorrow.
Hydor also has a NW pump that they are making, looks kinda interesting.
Tim
Tim