The answer would be entirely dependent on the type of pool (above ground, below ground) and the material it is built from (cement, fiberglass, etc.) and the type of defect (crack, chip, hole, stains, rust, growth, etc.)
1 post on my above ground pool is high and the bottom of the post has widened. Should I try to dig under the post and fix it or just leave it alone?
I have etching in my inground concrette pool and i need to know how to fix it. the pool was made in 1973 i bought the house three years ago.
Call a plumber
You learn to live with it.
Firstly you find out how the DE got into the pool - must be a broken filter pad. Fix that, then vacuum the pool. No point vacuuming before you fix the filter problem, or the DE will finsih up back in the pool.
I have a 15' above ground pool, when we installed the pool it was a little uneven (not even 1") now that the pool has been up for a while it has settled and now the side that was lower is off by about 3-4". How can I fix this without draining the whole pool?
no
use Jose ortiz
You first of all have to find out what is causing the slab to heave. If you fix the slab then within a two year period you will be redoing the slab again. You may have a leak in the plumbing of the pool or a leak in the house plumbing or to the garden hose. Fix all the leaks and then replace the slab.
The best way to fix holes in a mesh pool cover is to sew it. If the holes are too large for this you should consider just replacing it.
Shocking a pool is increasing a the chlorine levels to the maximum, successfully.
Cement!
Yes