Hello all, I'm recently retired and now live on a fixed income, oh boy! I was involved in industrial mechanical maintenance for over 47 years. I've had my Sharkline above ground pool since 1986 and it still looks good today! Keep in mind that is 36 cold New England Winters. It appears from what I'm reading on this site, that I'm one of a small majority who still uses Baquacil. I believe in a "crystal clear" pool at all times and will do whatever it takes to keep my pool and water clean. If I can help anyone let me know.