If it has a slimy feel it is probably algae. Just hit it with algaecide and brush all the surfaces.
m9
No
no
Gunite is a trowled-on cement coating similar to stucco.
Brush your tounge.
I do think that you need to change the Filter. It not suppose to be brown. You can buy them at any pool store in your area or retail store that sells pools.
No, M9 paper does not have adhesive coating protected by a strip of brown waxed paper. M9 paper is used for detecting liquid chemical agents on surfaces and does not have any adhesive coating or protective waxed paper strip.
m9
M9 Paper
m9
M9 paper
m9