Optimal depth for returns?

pjt

Gold Supporter
Jan 7, 2012
210
The Woodlands, TX
Is there an optimal depth below the waterline where returns should be installed?

Would there be a benefit to having a couple returns at the bottom of the pool to help with circulation?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
20,412
Northern NJ
Is there an optimal depth below the waterline where returns should be installed?
12" to 18".


Would there be a benefit to having a couple returns at the bottom of the pool to help with circulation?
Some people feel it can help evenly heat a large pool with warm water rising from the bottom of the pool. I can tell when I swim in my 50' pool that has 3 returns on one side when I swim from a warm plume out of a return to a cooler area of water. It does not bother me that I would add the complexity of floor returns.

I don't think floor returns makes any noticeable difference in circulation. Good placement of skimmers and returns on the wall is all you need.
 
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tenderfoot

Bronze Supporter
Aug 10, 2017
91
North/TX
Additionally my opinion is that you need to make sure you have enough returns so that these can create movement all over the pool without having any "dead" spots.