Spa draining when pump is on

[waste]

Welcome to PF!!

The way [i]we[/u] design our spillover spas is to run with no spa suction when in spillover mode. In theory, the spilling over acts like a skimmer and sends surface debris into the pool to be claimed by the pool's skimmers. The only time we open the spa drains is when the spa needs cleaning (debris can be swept into the spa drains for filtering) or we manually vacuum the spa seats and floor.

Due to the vaguerities (sp?) of each system set-up - how could you possibly be able to select "that perfect valve setting" to enable you to be able to insure that the spa won't eventually fail to overflow?

However, if it's worked for you in the past, I can only suggest that you don't ever let the skimmer baskets/ MD become congested enough to block any suction through them.

[john509]

Thanks guys. I am kind of new to this. First pool. Came with the house. I think the pool has been there since mid 1980's but having only been here about 6 months so I am not sure what is normal. I wasn't sure if it was evaropation since temps are getting in the 90's now here in South Texas or if it was something else. Thanks for the help.

I am glad to know the design is to only run suction in the spa if you operating spa only. If I replace the heater that thas is there but been taking out of the circulation loop, there might reason to only circulate the spa if it is being heated. No heater no need for that.