Hello-

I have an AGP 18x52 round Intex Ultra Frame Pool that came with a Krystal Clear Sand Filter Pump 14" model# SF15110. This is my second season of having this pool. At the end of the season last year some issues came up with what i thought was sand but it seems to be dirt and dead algea that was returning back into the pool and laying on the floor. I did everything according to the manual. I went over the "check-list" to see if I missed anything I should do as far as maintenance or chemicals.

My husband and I ended up doing the following:
1. replaced the laterals inside the tank (pool place told me this was the cause)
2. replaced the sand completely (pool place told me this was the cause) so we did this and the season ended and we closed the pool for the season.

Now this season my problem is getting algea out of pool and keeping it out. I have the appropriate chemical test kits to give TRUE number readings for CHL & PH and acid test, etc....my chems are spot on and water is CLEAR. Pump has great pressure, no leaks, but have been dealing with algea. I have done everything according to manual and idiot guides and still after shocking pool and maintaining great chemical numbers last night I had vacuumed to waste again to remove the dead algea from pool floor but after i was done cleaning the pool i turned it off and went to bed. Hubby turns on pool filter this morning and after 45 mins of pool filter being on, he tells me there is this stuff coming back in the pool still................I am ready to pull my hair out. Can you offer any suggestions to elliminate this for good? As of now, we have tank top off and I do see alot of debris on top of sand and thought I could perhaps remove and inch of sand and replace it with fresh new sand and try to see what happens. Is this a good idea or are we spinning our wheels??

Again, I use correct test kit for chemical stabilization and water is clear....what am i doing wrong??

------>Are the steps to properly remove algea from pool floor this: vac to waste?????
THANK YOU FOR YOUR HELP!!!!!!!

Cindy in DE