I have used Baquacil since 2008 and over the past two seasons I have started dealing with cloudy water and slime. Two days ago I discovered the pool had turned green and from reading on this site I knew it was time to dump Baquacil. I am waiting until next next spring to convert as I will have more time then and I am in the process of closing the pool for the winter.
My question - is it OK to drain my sand filter and leave the sand rather than remove it like I normally do? I know I will need to replace all of the sand after the conversion in the spring. Or should I remove the sand for closing, and buy enough sand in the spring to replace it twice?