Looking At A Used Tub That Had Heavy Chlorine Use

[Nitrousman]

The original owner was really into heavy use of chlorine. I know this since he showed me the hockey puck sized tablets of chlorine he uses in a 320 gallon spa. Are high levels of chlorine damaging to the equipment? He's been using that much chlorine since the tub was new in 2000. I don't know how the old had any skin left on him and the tub has never needed any service.

[chem geek]

The hockey puck of chlorine was probably a 3" Trichlor tab and if it were 8 ounces, then one tab usually lasts around 4 days or so in a floating feeder so would add 43 ppm FC per day which is way too much and would also add 26 ppm CYA per day. It would also make the water very acidic.

Though the high chlorine is not good, the acidity is worse unless he compensated by adding Spa Up regularly. I suspect he didn't. The damage from high chlorine and especially from acidic conditions would be in the metal components in the pump. I'd say he was very lucky and if something happens to the equipment when you use this tub, you'll know why it failed.

[Nitrousman]

He did have a bucket full of chemicals he used but I don't remember everything that was in it. I just use a Nature 2 and a non-chlorine shock in my old CalSpa and I've never had any issues.