Return Blowers (Tunze) Let me know ?

[Paul28]

Im not shur on how many blowers i can put on this pump im going to make a closed loop system and wanted to know what you think would be best on how many blowers to have blowing out the pump can be ran in sump or out of water im going to hook a fan to it and run it out of the water full closed loop here are few pics of the pump and also were is a good place to buy those bending blowers, i was going to build it with 1inc1/2intake and 1,1/2 inch blow out with alot of 3/4 blowers if you have any good ideas on this project let me know or should o go 1,1/2inch blowout down too 1/2 inch blowers let me know

I just measured the intake and return and there 1,1/2 inches open for ideas plz

Thx Paul