Crystal,
We really need some good test numbers. Need to know Free or Total Chlorine, pH, Calcium Hardness, Total Alkalinity, and CYA...Cyanuric Acid (stabilizer) levels. Never saw one but people here say Walmart has a decent drop based kit for about $15. Cal Hypo by itself may or may not cloud the pool. Depends on other factors. I wouldn't go the 'DE in the sand' route until we understand more about your situation.
Al
Also...welcome to the forum.