Manufactures chlorine non-recommendations

[trivetman]

A friend just got a new hot tub and was looking through the manual. It specifically says not to use trichlor or liquid chlorine. Any idea why that might be?

Not sure of make and model but i can find out

 

[mknauss]

I can understand not to use trichlor, it is very acidic and the CYA would skyrocket.

Liquid chlorine is benign. It adds chlorine and salt. Likely trying to sell their 'special' chlorine. Which would likely be dichlor or cal hypo.

 

[trivetman]

Thanks the trichlor made sense to me too. The no LC seemed wierd. There wasn’t anything in the manual about buying their specific product.

 

[Jimrahbe]

T-man,

I suspect the hot tub uses mineral cartridges of some type that they want you to buy..

Somewhere, the manual has to have information about how to sanitize the water...

I was looking at new hot tubs in the Pool Store that I use to get my liquid chlorine, and they all have some type of cartridge sanitizer systems..

Thanks,

Jim R.

 

[JamesW]

It specifically says not to use trichlor or liquid chlorine.

What product is recommended?

 

[Mdragger88]

Mine says only use dichlor & to pour it directly into the skimmer/filter area - we all know that’s a big ole no no! I did that exactly once & it bleached the top of my filter & there was still undissolved granules stuck in there days later.
Dichlor is also acidic & raises cya approximately 1ppm for each 1ppm of fc so its not a sustainable long term sanitation solution.
Show your friend this guide

How do I use Chlorine in my Spa (or pool)?

If you have a question about any information within this Sticky, please start a new thread for yourself where you will receive very quick responses to your specific questions. Thank you! Introduction There are two main things to consider when maintaining your hot tub water, Water Balance and...

www.google.com

It is also pinned to the top of this subforum.
Liquid chlorine is fine to use so long as it is the appropriate amount & is poured slowly into a running return (not allowed to rest on any surfaces)

 

[trivetman]

What product is recommended?

Not specified.

 

[Mdragger88]

Hmmm…
Looks like they offer a salt system - maybe a hot springs? Your buddy should inquire about that.

 

[RDspaguy]

A few things.
1) Spa manufacturers are not chemists and recommend and install industry standard things. These instructions, likely word-for-word, will be in almost every spa manual.
2) Dichlor, as listed by every chemical manufacturer and the taylor test kit, is nearly ph neutral in solution, while liquid is high ph. I'm no chemist and not starting that fight again, but pool companies, waterparks, casinos, you-name-it, operate on that principle, and have acid and liquid chlorine in their automated systems. If it's not right, I'm not sure why that works for everyone everywhere, but it's the info they use to make their recommendations either way.
3) Liquid chlorine spills and splashes, as does muriatic acid, which they also usually say to not use. Damage to the cabinet, cover, plastic parts, or anything else for that matter, caused by chemicals is not covered by warranty. Everything recommended for spas that can damage anything is recommended in granular form.

 

[DavidLast]

I suspect it is Liquid Chlorine didnt used to be recommended for hot water use. At the time Dichlor was the favoured chemical for Spas. But heck this is back in the 1990's. Perhaps this part of the manual hasnt been updated since then?