Swiftech MCP655 or MCP350

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Mar 15, 2008
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The MCP655 has a flow rate of 1200/LPH and 10ft Head. 1/2" barbs
The MCP350 has a flow rate of 350/LPH and 13ft Head. 3/8" barbs

My loop all consists of 3/8" barbs and hose so the MCP350 would be an obvious choice but Im a little worried about the flow rate. Is it fast enough?
 
I'd always go with the 655. *Way* more reliable, and just as powerful as the 350, in any real life scenario.
 
You can stretch it with a little tough love, or get a couple adapters.

Ive thought about stretching it but apparently the barb is closer to 5/8" than 1/2". Well this is a customers review Ive read on a site selling the pump. If this is the case I think it would be over stretching it a little. 3/8" ID to 5/8" is a bit much. Ive been looking for adaptors and cant seem to find any. If you know any sites where I can get some will you please post them. UK if possible as Im living in Ireland and US takes a while to get here. Thanks!
 
Ive thought about stretching it but apparently the barb is closer to 5/8" than 1/2". Well this is a customers review Ive read on a site selling the pump. If this is the case I think it would be over stretching it a little. 3/8" ID to 5/8" is a bit much. Ive been looking for adaptors and cant seem to find any. If you know any sites where I can get some will you please post them. UK if possible as Im living in Ireland and US takes a while to get here. Thanks!

Two of these+2 barbs in 3/8 and 1/2 that suit your needs if you want metal, or just run to the local plumbing shop/hardware store and get a nylon reducer.
 
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