Adding DE and/or clarifiers (or some other "magic" chemical) probably works well sometimes and sometimes not.

Most importantly, I think it tends to mask what was wrong with your pool to begin with.

If your filter won't clear your pool, it's not doing it's job.

If you have lingering algae conditions in your pool, DE or clarifier or anything other than CHLORINE (well, almost) will not remove those conditions.

The forum's philosophy has always been simplicity and I think you start to get away from that idea when you "trick up" your equipment or your chemistry.

For those of us that are long-term on this forum, have you noticed that CHLORINE seems to cure about 95% of pool water issues? It certainly seems that to me.

So, to Karen's issue, I think Janet and Andy's thoughts on continued use of CHLORINE will cure the pool. It is probably the one true "magic bullet".