Last year I had sand coming into my pool. I went through all the things mentioned on TFP and it was not algae but sand that settled just below the return. My filter is a doughboy Media Master Model 1900 (item # 0-1702-019) with a filter area of 2.0 Sq. Ft and a max pressure of 50psi. It holds 225lbs. of No. 20 filter sand.
I decided to empty the sand and check the under drain assembly at the bottom to make sure the teeth weren't broken thus allowing sand to enter the pool. Out of curiosity I called the Doughboy dealer who said it is around $500 to replace the whole set-up including the multiport valve, sand tank with stand and the filter parts that make up the under drain assembly. $200 to replace just the under drain filter components (doughboys version of the laterals). My current sand filter was purchased with the pool by the previous owners in 1998. (I have already replaced the pool liner, pump and plumbing since we bought the house).
1. Would it be worthwhile to go ahead and replace the whole sand filter and multiport valve?
2. Could I replace it with a Hayward or some other brand that has parts I can purchase online? (I really get tired of dealing with the doughboy store.) Would the plumbing match up ok?
3. Would you have any recommendations as to what I should choose based on previous experience?
Thanks for your help!
PS: I am a geeky science person and have loved all the science answers on this site! It just makes sense! Thank you!