I'm using bromine (I'm in Canada, it's what folks use up here) in my tanks (1/4 - 1/2 tsp after every float, as soon as I turn the pump on so that there is plenty of time for it to dissolve) and have noticed that there are weird stains on myliner. I've scrubbed and scrubbed with a nylon bristled brush, had added a metal-remover to my water, then cleaned and even cried salty tears into the tank during the entire process. Nothing has helped. It almost looks like a combo of bleach + mold (but I know it isn't mold!).
I have contacted other Canadian float centres who I've heard have had the same issue, but haven't received a response (or just a response that acknowledged the problem w/o any advice). I also contacted the manufacturer, Oasis Relaxation, but was given a website to contact (Ask Alan A Question) for help. I'm at my wits end and have only been open for 8 weeks and therefore do not want this problem to persist.
Any advice would be useful and greatly appreciated.
Many kind thanks,