mraybone

Hi all! So I've got my tub running nicely again after an Ahh-Some clean. I know now to shock after use, but I was wondering how often I need to shock if the tub isn't used, whilst keeping chlorine levels consistent, obviously?

Currently rocking the tub with some ahh-some, there's definitely a white coloured deposit on the water line, nowhere near as much foam as I expected though...

Ok thanks. I'll probably go for the small amounts more frequently approach. I really don't want to encounter another 0 chlorine incident. I did say 'hours' but that's on the basis the last time the tub was used, it was for about 2 hours, with 4-7 people always in. Anyway, I'm about to crack open the Ahh-Some...

When in use, what's the best way to add chlorine? The granulated dichlor that I have says to add it directly to the tub. If I'm adding it hourly during bathing, is it best then to put it into the filter chamber? And with a full tub of 7 bathers - that's a lot of chlorine required...

I also find it very annoying that the Taylor 2006 isn't readily available in the UK.

This is why I like chlorine tablets - they give an even chlorine distribution as opposed to the spiked nature of adding individual amounts periodically. That said, shocking is easier than with tablets.

I was wondering - what is more likely... A high level of contaminant in the spa after a big pool party preventing my chlorine tablets from being effective at shocking due to their slow release, or a biofilm? Also, my tabs are trichlor, if I were to add some dichlor (it's the powdered stuff, there was some left over from the previous owner), would that be bad due to mixing chemical types? I have Ahh-Some on the way, but was considering a last ditch attempt at super-chlorination using the dichlor powder, just to see if the chlorine depletion remained high after a successful shock.

Thanks! Well with 4x as many chlorine tabs in the spa, the levels have only reached as far as you'd expect for day to day use, it never shocked, so something is eating chlorine. I'll be getting some Ahh-Some and doing a clean.

Also, I'm in the UK, is this the right stuff? http://www.hottubdiy.co.uk/ahh-some-hot-tub-cleaner-6oz.html

Right, thanks, I'll see how this chlorine splurge goes. If, after shocking, it depletes rapidly, I'll look at an Ahh-Some clean.

Thanks for the replies! You're right - it should be no surprise now, but at the time I wasn't expecting it. The tablets are trichloroisocyanuric acid, my spa eats about 2 of them in about 5 or 6 days (96ºF, little to no use). As it happens, after adding a couple more tablets today, the chlorine levels are rising, thankfully. For info, during the heavy 'session', the spa dropped from 96ºF to 85ºF. I will definitely shock after use now and perhaps a tablet in the filter box during heavy use would be useful. Due to the slow nature of shocking with tablets, what other chlorine shock product - you mentioned dichlor or bleach? - would you recommend? And yes, the spa is a constant worry for the host - especially now! Do you think that the couple of days of it being virtually chlorine free can be balanced with a big chlorine shock, or might I have to consider a clean+refill?

Hi guys, I was hoping to find some help here if possible. I recently acquired a hot tub with a house. I got some advice from a friend who is a spa dealer, I cleaned the tub, changed the water, superchlorinated and all was good. I had a hot tub party (7 bathers, a few hours) a few days ago and afterwards, due to some water loss, I topped up and tested levels only to find, to my surprise, that there was 0 chlorine. I usually have 2x chlorine tablets in a floating dispenser and this keeps FC and TC around 5ppm usually, sometimes slightly higher than I'd like. I added a few more chlorine tablets, with no apparent effect and then an extra one, and only now the FC has just started to register at nearly 0.5ppm. I'm worried about low chlorine levels and bug growth, so I'm about to pile in a load of extra tablets. After reading some posts regarding Chlorine Demand, noting "100% CD is Bad. This could mean you just had a Hot Tub Party...", is this chlorine behaviour normal after heavy use, and will extreme superchlorination help get things back to normal, or do you think there could be underlying issues? Bear in mind the tub was cleaned and refilled (twice) only a month ago, levels have been rock solid (usually too much chlorine) and it has only been used heavily this one recent time. Thanks!

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