What are your experiences with the Poseidon P-4/Velocity T-4

[mfinn]

I recently changed my main return pump from a Pan World pump to a Poseidon P-4.
I did this expecting to have to deal with heat being produced by the pump and adding a few degrees to my 180 gallon tank.
Every thread I have read, someone always will say that they produce way to much heat, to be a good return pump on a tank without a chiller.
After looking at the pump, the first thing you notice is it is alot smaller because it does not have a fan on it.
So when I hooked it up to my sump, I also added a new clip-on fan that has a low speed. I dropped the temp on the top end of the heat setting on the tank heater, and let er rip.
The first thing I noticed is that there was "O" pump noise. If the water hadn't started moving out of the sump, I'd swear the pump hadn't started.
When I got up the next morning I expected the tank to be at or near the normal 78, but it was at 75.5.
Since then I raised the top end temp on the heater back to where it was and have the fan on the same timer as my actinics.
I am not seeing the increase in tank temp that I have read about.
I really think these pumps are getting a bad rep as tank heaters.
Anybody else use one??

 

[Skimmy]

just wait until it gets a nice calcium layer inside it, you'll get the heat your looking for
seriously though, the trick with these pumps is to take it apart and do MONTHLY maintenance to keep it clean, use very hot water and vinegar.