Gre Grenade vs CTX-370 ClorLent

A BBB guide to supermarket poolcare.
Use store-bought bleach, baking soda
and borax to replace proprietary pool chemicals.
davidafonso
I'm new here
I'm new here
Posts: 8
Joined: Sun 23 Feb, 2020 09:09
My Pool: Gre Grenade 436 x 336 x 119 cm

Gre Grenade vs CTX-370 ClorLent

Postby davidafonso » Wed 29 Apr, 2020 12:06

Hi guys,
I'm a little bit puzzled with the relationship of my pool (http://www.gre.es/pt/producto/16551/790086-ovalada-grenade-436-x-336-x-119-cm.aspx) and the clorine tabs I'm using (https://www.ctxprofessional.com/fr/produits/chemical-product/chlorine-disinfection/tricloroisocyanuric-acid-1/ctx-370-clorlent-1/).
So, when I put one 250g tab of CTX-370 ClorLent on the skimmer of my Gre Grenade (436 x 336 x 119 cm, 12m3 of water) what happens is that after let's say one day the OTO test shows clorine > 5. The colour test even changes from yellow ("normal") to a orangish colour. Any hint on what is happening? Is my pool "absorbing" the tablet too vigorously? Should I change my clorine input? Thanks, David


Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 1557
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Gre Grenade vs CTX-370 ClorLent

Postby Denniswiseman » Wed 29 Apr, 2020 15:12

Are you saying that the chlorine is to high because a dose of 6ppm wouldn't be wrong
When you are using trichlor and dichlor you are putting cyanuric acid (CYA) in the pool which stabilises the chlorine, however excessive CYA renders your chlorine ineffective and you have to use more
For every 10 ppm Free Chlorine (FC) added by Trichlor, it also increases Cyanuric Acid (CYA) by 6 ppm.
For every 10 ppm FC added by Dichlor, it also increases CYA by 9 ppm.
For every 10 ppm FC added by Cal-Hypo, it also increases Calcium Hardness (CH) by at least 7 ppm
Chlorine / CYA Chart
Recommended Pool Levels
davidafonso
I'm new here
I'm new here
Posts: 8
Joined: Sun 23 Feb, 2020 09:09
My Pool: Gre Grenade 436 x 336 x 119 cm

Re: Gre Grenade vs CTX-370 ClorLent

Postby davidafonso » Sat 02 May, 2020 06:40

This is a very stupid question but the 250g tab of CTX-370 ClorLent are trichlor or dichlor?
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 1557
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Gre Grenade vs CTX-370 ClorLent

Postby Denniswiseman » Sat 02 May, 2020 12:07

I won't say stupid more not observant
If you look at the link you sent for CTX-370 ClorLent it's in there trichlor, also in the web page.
Keep at it and you will be an expert soon

Return to “BBB Pool Care”

Who is online at the Pool Help Forum

Users browsing this forum: CommonCrawl [Bot] and 0 guests