^ Probably because the MCP655 he's looking at can hit 1200 l/h and has 1/2" barb connectors - it's intended for larger bore loops.
That's correct. And note, I never proposed controlling the MCP655/D5 pump directly... I know it's power requirements far exceed the output of the Aquaero.
However, the MCP655/D5 pump has a POT which simply acts as a voltage divider to the pump's microcontroller to set the operating speed of the pump. My question is, a fan controller, like the aquaero is simply a voltage divider as well, right? It simply provides 0-12V across the appropriate pins. So regardless of what the fan controller was designed for, the bottom line is it is an electronically controlled POT and can likely therefore be used to replace the manual POT in the MCP655 and thereby control the pump. The only question to be determined is the voltage range the MCP's POT works over... is it a 12V divider or a 5V divider?
Does this make sense?
Why is there so much resistance here to trying new things? The makers of aquacomputer stuff should be excited to see their goods being used in ways they never considered.