I was reading about Hydor Koralia powerheads and the specs look pretty good to me. I am currently using SEIOs (620s, 6 in a 135 gallon) and am setting up 180 RR. I was thinking of going with the few of the largest model (Koralia 4). At $45.00 at Marine Depot it seems like a good deal and guite a water pusher 1200 GPH at only 8.5W. SEIOs are pushing about 600 GPH at 6W if I recall correctly. If you have expirience with these please chime in on pros and cons and possible alternative. Pls help.
(Tunzes are out of budget)
(Tunzes are out of budget)