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Well, as I type this, I am draining my hot tub. The water is only 13 days old but after a 3 hour soak by my 12 year old daughter and her 4 friends, the water was in a disgusting state. I have just finished cleaning the scum line from the outside and water has a really bad smell about it as well as a greenish colour to it... The submersible pump is nearly done and I have learnt some valuable lessons, which include:-1) Keep the bromine levels up - I now have some granulated bromine to help the pucks keep the level of bromine up.2) Inspect every child entering my tub for hair gel, make-up and other oily things that will turn the after nasty3) Keep my eyes on the scum line - I was shocked about how bad this was and have bought a scouring pad that is just for cleaning the tub4) Ground my 12 year old until she is 21....Nosh.
So - it would figger I would need LESS than chlorine initially, right? So how much chlorine do you put it \and I will put that in and top up as required....Cheers in advanceNosh
In the future don't give up so quick. I'm sure the water looked nasty as you noted but it wasn't too old so I would have suggested you shock it with chlorine (leave open 15 minutes with pumps on), let it filter for 4 hrs, clean the sum line again, hose off the filters and the next day it probably would have been fine.