I heard about this pool calculator here and was under the impression it was good tool to use. I thought it would be very useful for calculating dosages for my pool.

http://www.poolcalculator.com/

However, recently I read a post here where it was said that (I'm paraphrasing) "...we don't particularly like that pool calculator here..." and another that said "...it's good for some things but not for others...."

So I'm confused about whether or not the pool calculator is a good tool to use or not. Can anyone clarify this?

Thanks.