Ive got this very fine pure white sand which makes cleaning absolutely impossible. I can not use any kind of vac becuase it only sucks up sand and nothing else. I have tried absolutely EVERYTHING. So my question is what are your opinions on changing my sand to a nice pool filter sand?? If i did should i leave my white sand on the bottom and mabye take a little bit out. Or should i try to take all the sand out? If i did this i would keep all of my rocks in but i think i might be taking out too much bacteria? what are your suggestions..