Swimming pool water?

How do I drain the water out of my filter/drum to my swimming pool?

• I back washed my filters but the water that they sit is in green....full of algae. I tried to see where the valve was to drain all the old water but I was not sure how to do this. If I leave that algae water in the drum, will it not just circulate through the pool again? I cannot get my water in my pool to turn blue. It's still green. I shocked it with 2lbs yesterday after I cleaned the filters but, as I said, I put the drum lid back on with the water being green. How do I solve this problem? or if I run the pump continuously for 2 or 3 days will it eventually be ok?

• Answer:

  There must be a way to disassemble the filter housing. Otherwise there would be no way to change the filter cartridge or do work on the pool. You'd have to turn the pump motor off to drain the filter housing. If you drain the filter housing, you must, before you turn the pump back on you must prime the pump. Priming means you fill the water lines going from the pool to the pump (filter basket right before the pump). You'd need to go to a hardware store and get as "water wienie" for a pipe the diameter of the pipes in your system. The instructions are on the package and it is simple to use. OK ... to drain your filter housing ... 1. Use a dry marker and mark the pipes under the position of the valve handles so you know where to turn the handles back to where they were before you started. 2. Turn the pump motor off. 3. Look at the pipes in and out of the filter housing. Adjust the valves around the filter housing so that the water will flow in a reverse direction. But ... I go back to my first statement ... there must be a way to open the filter housing ... a metal band around the middle of the stainless steel cylinder. Close all of the valves around the pump housing so you don't have to prime the pump. Open that metal band ... it has a rubber gasket inside so be careful not to mess up the rubber. If you mess the rubber up, the rubber is replaceable. Take the filter cartridges out, thoroughly wash them and bathe them in a bucket of all liquid chlorine. If there is life inside of the filter (filters do not get algae as algae requires sunlight), the little critters will be killed. Get some underwater grease at pool supply store or a home improvement store. Put the top portion of the filter housing back on ... put a bead of grease around the joint ... put the rubber seal and metal band back on and tighten the metal band. Start the pump before you open the valves. Don't waste a lot of time, but after the pump motor starts, slowly open the valve to the filter ... open the air bleed valve at the top of the filter housing ... when water starts to shoot out of the filter housing, open the valve on the other side of the filter housing to allow water to return to the pool.