Figuring Out How Much Cal Hypo to Add to Pool

If you're looking at a cloudy backyard oasis and wondering exactly how much cal hypo to add to pool water to get it dazzling again, the normal rule of thumb is one pound with regard to every 10, 000 gallons of water. That usually bumps your chlorine level up can be 5 to 7 parts per million (ppm), which is the sweet spot for a weekly upkeep shock. Of program, pool care will be rarely a "one size fits all" situation, and depending on whether you're fighting an algae bloom or simply doing some routine cleanup, that amount may change. ...

April 12, 2026 · 8 min · Morice Gaffney