Quote Originally Posted by camp po View Post
So, if that's what your saying, how/why does one use Trichlor?
Trichlor can be useful IF the user understands the effect it has on the water. Trichlor adds CYA, as chemgeek explained, and is very acidic, so it tends to drive pH downward. It is useful for folks to use on a short-term basis, like vacations, to keep the pool clear until their return, or at the beginning of the pool season, when the owner wants to raise the CYA levels in the water. I personally use it at times in my pool. I live in a very warm climate, and my pool gets full sun all day,. I intentionally run CYA levels at around 100 ppm in order to decrease my chlorine useage, and due to high evaporation rates and splashout due to a high bather load, I have to top off my pool very frequently with tap water that is a pH of 7.8. There are times that it is very hard to maintain my CYA levels where I want them without using trichlor, and it helps keep my pH down in the lower 7-ish range. So..it can be useful, in the right situations. People just tend to get themselves in trouble when they don't account for the result of a high CYA without a corresponding chlorine increase.

BTW, you should be able to reply with your mobile device just like you do with your computer--it's just that your replies are going into a moderator queue and can't be seen on the forum until one of us mods it in, and Lisa and I haven't been too good lately about checking in as often as we normally do. I'll try to do better.....