Spa jet pressure question

[JohnASmith]

It is an oversized built in plastered spa and is about 4 years old. I just bought the property so I don't know the history. The filter is big enough for a good sized pool and there is about 16 jets 1/2 of which are spinning ones. There isn't enough pressure to spin them unless I run the air blower.

===============================

OOPS, sorry I didn't mention there is no pool just the oversized spa which is almost a small pool.

(posts combined - PoolDoc)

[mas985]

there is about 16 jets 1/2 of which are spinning ones

You would probably need two 2 HP pumps for that many jets. The average jet requires about 15 GPM each with some jets requiring upwards of 25 GPM. Either way, a 2 HP could not produce that much flow.

[waterbear]

You would probably need two 2 HP pumps for that many jets. The average jet requires about 15 GPM each with some jets requiring upwards of 25 GPM. Either way, a 2 HP could not produce that much flow.

And there you have it!

[kelemvor]

Just a thought, make sure your filter is clean. My built in spa won't really get to bubbling if there is even just a little less pressure due to dirty filter... and my spa only has 4 "regular" jets.

[JohnASmith]

Thanks

[JohnASmith]

I really think I have a design problem. My system has an air blower that injects lots of air into the jets but when I turn on the 2HP water pump the air goes away. I would think that if the air properly mixed with the water the action would vastly improve. Could I need a more powerful air blower?