Well I was just looking at the Mag 3 again I really like it. Should I be concerned though about excessive heat? Especially for my size tank. Oh and I'd be looking at almost 335gph return. Would that be to much flow in the DT and what about velocity through the sump/fuge?
I completely agree. I'll add a pro and a con from my experience... you decide which is which! Reasonably priced and noisy.
Over the years I have run a mag 18, Eheim 1250, and a TUNZE (don't recall the model# but know it's model that is discontinued). Of the three I would rank the mag the lowest. In addition to the cons previously mentioned I had to replace the impeller on the mag, which was not cheap. The Eheim and TUNZE were both quiet and dependable.
I'm currently running the TUNZE. I would buy an Eheim in a heart beat though.
Tom
Last edited by Tom@HaslettMI; 04-03-2014 at 04:28 PM.
I agree on the Water Blaster or even one of the new Jebao DC variable speed pumps.
Mags are dependable but their design has not changed in at least 30 years and probably more like 50 years. Newer pumps have much more computer aided design and hydraulic testing so are more efficient which is important when you consider the hours you will put on a return pump 24/7/365. A little more $$ spent up front will more than return itself over the life of the pump in power savings alone.
More efficient. Look at 10-20 watts or more power savings over the 5-10 years the pump will last. It adds up. You wil also find companies like Water Blaster and Eheim are very conservative with their figures so you could probably step down one size pump and still get the same or more flow and much much less heat generation so no fighting summer tank temperatures with fans or chillers. There is a lot to it.