Poseidon PS 4
 

Anyone have experience with the Poseidon PS-4 in-line pumps?

yep, i have run it as my return pump. mines an older ones when it was made by custom sea life. it runs great and is dead quiet but addes a few degress to the water.

I've run the CSL T3 and T4. Both excellent pumps IMO. I only wish they made them easier to dissasemble and clean.

Have either of you ran a Mak 4?

I run a BlueLine NS 1100 which is very similar to a Mak 4. A Mak 4 sounds like a freight train compared to these pumps...

when i get some cash im going to replace my t4 with a blueline as a backup as its getting old.

I guess that explains the price difference. Who sells the Blueline up here? I saw them at Big Al's in Burnaby but I usually find the prices are quite a bit higher than the competition.

I got mine from Ocean Aquatics. I like the Blueline as it is pressure rated and only used 70W of power! You can run two of those pumps for the same wattage as a CSL T3/4.