FROG Serene Replacement Bromine Cartridge for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 1 Pack

I've been a hot tub owner for years, and I've tried just about every sanitation system out there. Let me tell you, the FROG Serene Bromine Replacement Cartridge has been a game-changer! I was hesitant to switch from traditional chlorine, but the ease of use and the consistently beautiful water have completely won me over. Installation was a breeze – just pop it in and adjust the dial. The water has never looked or felt better. It's incredibly clear, and the bromine level stays perfectly balanced, meaning I spend less time fussing with chemicals and more time enjoying my hot tub. No more harsh chlorine smells or irritated skin! What truly sets this product apart is the longevity of the cartridge. I'm amazed at how long it lasts, saving me both time and money. Plus, the peace of mind knowing my water is sanitized effectively is priceless. If you're looking for a simple, effective, and gentle sanitation system for your hot tub, look no further than the FROG Serene Bromine Replacement Cartridge. It's truly a 5-star product that has made hot tub ownership a much more enjoyable experience. Highly recommend!

Great product

FROG Serene Replacement Bromine Cartridges for use with Hot Tub FROG Serene Floating Sanitizing System - Prefilled for Quick & Easy Hot Tub Maintenance - 4 Pack Keeps hot tub sparkle and clean also great price for 4 pack!

Frog bromine cartridge is a must for every pool owner. Takes out any discoloration in water. Makes pool water clean and sparkling.

These seem to work great. Very painless water management for my spa. My only complaint is it’s hard to really know when to swap them out. They will still have chemicals in it but the chemicals aren’t as affective anymore after about 2-3 weeks. Once I start to notice my testing indicate I need to add shock more often I swap out for a new one but will leave the old one in the spa under the filter cover until all the chemicals are physically gone.

This FROG Serene bromine cartridge makes hot tub care simple—just drop it into the floating system and you’re done. Water stays clean and balanced with less odor, and there’s no measuring or mess. One cartridge lasts a couple of weeks depending on use. Perfect for anyone who wants low-effort, consistent sanitation without daily chemical maintenance.

Easy to use. Maintains bromide levels.

Crystal Clear Water Made Easy These FROG Serene Bromine Cartridges are a total lifesaver for hot tub maintenance. They are incredibly easy to swap out, and I love that I don't have to deal with measuring out loose chemicals or the heavy smell of traditional chlorine. My water stays crystal clear and feels much softer on the skin. This 4-pack is a great value and keeps my system running smoothly for weeks. If you use the FROG Serene floating system, these are a must-have for stress-free spa care!