I'm planning to drain about 70% of the water in our pool to reset the CYA levels (excessive) somewhere in the Jan-Feb timeframe. I would prefer to use my existing pool equipment to perform the drain, but I believe I have a combination skimmer (2 holes) which complicates the drain process using the filter pump. I do not have a diverter or any sort of device below the skimmer basket. Would it suffice to simply "jumper" the main drain to the pump suction inlet?
The other question I have is related to my Pentair Triton II sand filter equipped with a slide valve. The slide valve allows for 2 positions only, normal and backwash. Will my filter be alright if I drain a significant volume of water through the filter with the slide valve set to backwash? As far as I know, there is no "waste" setting on the slide valve.
I have another pump that appears to serve the rock waterfall and does not run through the sand filter. It's got a hose spigot mounted near the pump, but I don't think using it is an option because the suction for the waterfall is fairly high in the shallow end of the pool.
The other question I have is related to my Pentair Triton II sand filter equipped with a slide valve. The slide valve allows for 2 positions only, normal and backwash. Will my filter be alright if I drain a significant volume of water through the filter with the slide valve set to backwash? As far as I know, there is no "waste" setting on the slide valve.
I have another pump that appears to serve the rock waterfall and does not run through the sand filter. It's got a hose spigot mounted near the pump, but I don't think using it is an option because the suction for the waterfall is fairly high in the shallow end of the pool.