Giant 20' x 3' x 2' router build

[charlieuk]

Yea I'm know expert but I think that may be a bit over the top. The amount of surface area that 15m of tube has for the small amount of water inside and the temperatures we get over here and the load it will be under I don't think I will be fine just need to find a suitable pump that can run for a good few hours. I have been given a 240v pump that's destined for corrosive materials but can't help thinking its ott and going to be a waste of power?

[EddyCurrent]

Yea I'm know expert but I think that may be a bit over the top.

No way, those were just my first thoughts
If you get the extremes sorted out, the answer lies somewhere between.