It would depend on the nature of the dirt, Emptying a pool is always the last option as it is a waste of water and chemicals. most cleaning jobs on a pool can be done while it is still full. It is often a good idea to seek advice from a pool professionals say at a pool shop for example.
Inground vinyl is better, their is less exposed part to the oxigene, therefore, last longer.
Garret Vinyl Pools Inc. 281-855-7000
We used Garrett Vinyl Pools they have been around for years.
An inground pool is typically lined with either gunite (concrete), fiberglass, or vinyl. Gunite and fiberglass are roughly the same cost, whereas vinyl is considerably cheaper. With the lower price comes less durability, as vinyl lining has to be replaced every 8-10 years or so, whereas the other two can last for decades. Vinyl is also much easier to puncture or otherwise damage. That said, many people still prefer vinyl inground pools due to the lower cost.
what you can do in this situation depends on what is under the vinyl liner now.
thousands of dollars
An In-floor Cleaner would be the best option. However this can only be done during construction.
Need to rephrase question.
It is highly unlikely.
No. Replace the liner.
If you are talkin about a vinyl lined pool the answer is yes you can.
Yes you have to be a little more careful that you don't expose the vinyl to strong concentrations of chemicals as this may cause discolouration.