Your experience going from internal to external pump

[SirReefer]

Thanks I have narrowed it Down to those two swcc.. I was also reading that having less flow through the sump area might be better so I might give that a try probably will go with water blaster hy3000 and feed my reators. I have about 2 and a half head loss so I should be fine with about 7-8 turn over rate. Thanks for the recommendations

 

[sabbath]

These are diffenent sides of the same coin. Just flowing electrons through copper wire heats the conductor. I guess it's sort of like electron friction.

If a pump is submerged it may as well be a heater of the same wattage regardless of how efficient or well insulated it is, all the energy is trapped in the system until exchanged. An external pump may introduce less heat into your system IF it is cooled by some other means such as the air in your room circulating over the pump housing.

IMO anytime you can avoid a submerged electrical conducter you should do so.

Agreed and in my case that is why I stay with internal pumps. My system is on the lowest level in the home. The sump is in a spare room and my system runs off of the heater set at 76.6 year round. So the pumps heating watts in the water is helping mine. If I ran external pumps it would cost more to run from what I see and I would be running heaters (at 600 watts) more hours a day.