I have maintained my swimming pool since 2008 using Javel with no algae problems. However, a new liner has just been fitted, and the contractor said to only use the more expensive liquid chlorine, never Javel.
Since refilling the pool last week, the pool is using high quantities of liquid chlorine.
At the end of last season I noticed for the first time that the original liner felt gritty. Was this as a result of Javel use over 10 years? The new liner is high spec to take account of an abri fitted 5 years ago which raising the temperatures, hastened the demise of the original. I do not want to jeopardise the new liner following the above advice and recognise the pool contractor may have a vested interest. Any thoughts please?