[TerryA]

Hi Victor,

Thanks for the feedback and advice! My only concerns with going with 2 Mak 4's is that the combined flow rate of both is 2380GPH @ 0 head, not to mention the increase in amps (if any). I already have a Dolphin 3600 ( not an Ampmaster), Iwaki MD-100RLT and a MAG 1800 on the tank.

The MAG 1800 runs my current closed loop attached to a sea swirl. I am trying to elimainate the MAG 1800 and replace it with a fan cooled pump with an output of approx 3600GPH so I can share this output by adding another sea swirl to the close loop. I could go with another MAG but I think these pumps add excess heat to the tank (even when plumbed externally) and I am trying to eliminate that all together as well as keeping the amp usage down.

Do you know of any other low amp/ high output pump out there that would be more reliable? Also do you know how long the seals usually last and if they are difficult to change on the Ampmaster?

Thanks again!

TerryA