When searching for the best hot tub care solutions, many spa owners compare the Frog Ease Hot Tub Cartridge and the Frog Mineral Cartridge for hot tubs. If you're asking, Which is best for my spa? Here’s what you need to know. The Frog Mineral Cartridge releases natural minerals into your water, reducing the need for chlorine and helping maintain fresh, soft water. It’s ideal for those seeking effective spa water care with fewer chemicals. Meanwhile, the Frog Ease Hot Tub Cartridge goes a step further by combining minerals with SmartChlor technology, automatically maintaining chlorine level