We have an intex above ground pool that is 48" X 15'. I have started to notice dirt is building up in the seams around the edges of the pool. I am afraid to push very hard with my pool vacuum because I don't want to put a hole in it. Anyone have any suggestions on how to clean the dirt out? Also, I have a couple spots that are red on the bottom of the pool. What could I use to scrub or clean this off without damaging the pool? Thanks for any help.