Hello I was wondering if you could help me understand a bit about spas as I have had a bad run with a dodgy PB. It takes approximately 15 min for the spa blower to get working. The new PB I have appointed has told me that it is because the (2) domestic blowers are not coping pushing the water out of the pipes because the old PB did not put a loop in the pipe work. On the chat threads I see you mentioning "Hartford loop at the spa" quite a bit and was wondering if you can make a suggestion to fix this issue. For example,..would a commercial blower push the water out faster?