Carl

Really appreciate your help. Sorry to ask further questions... but you seem to have greater knowledge than me.

1) My current chlorine level is above 6 (my meter only reads up to 6), but we can conclude it is very high! If I add more chlorine as you suggest, will that not make my chlorine exceptionally high.... it will take over a month for the chlorine to return to normal levels no?
2) Adding more chlorine will not reduce my CYA level, or improve my alkalinity level. So I will still have CYA of well over a 100 no?
3) Can I not try adding some Algaecide instead as an alternative to shock chlorine? This would prevent the need for me to reach epic levels of chlorine no? Just worried as my meters normal range stops at 6 and yet you are suggesting shocking to 25 ppm. Seems really high to me... I wouldnt be able to use it for ages right?

Sorry to ask further questions

S