The 5 Best hottub cartridges (2023 reviews)

Here, we present cartridge that manages to win our hearts. It's the hot tub things hottub cartridge and it's widely considered as one of best cartridge you can buy. SPAPURITY contains activated charcoal filtration pellets alongside silver, copper, and zinc, making it an effective spa additive. The top has a mineral core to it. It contains filtration pellets that capture debris and impurities.

Why We Like This:

High capacity | handles up to 500 gallon spas
Slow release formula | boosts your water quality effectively, constantly, and without chemical odors
Effective | works alongside all hot tub chemistries

Best Runner up: Frog hottub cartridge

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The cartridge is a must have add-on for your regular usage. Frog serene is a complete hot tub sanitizing system and the only one that creates fresh mineral water in your hot tub. This frog bromine cartridge works only with frog sanitizing minerals, together, they create fresh mineral water in your hot tub. Unlike chlorine, bromine slowly dissolves in hot water so it’s easier to regulate, has far less odors and is less impacted by pH swings making sanitizing more effective. The FROG Serene kills bacteria 2 ways with a low level of bromine and FROG Sanitizing Minerals.

The Frog serene system delivers the serene feeling you’re longing for. It comes with less bromine, water is easier on skin, swimsuits and surfaces and water feels luxuriously soft. The prefilled bromine cartridge makes replacement quick and easy, plus it’s recyclable when empty. The Frog serene lowers your bromine use up to 50%* making water feel more comfortable.

Why We Like This:

New and hot release
Good brand reputation

Best For most Spas: Poolpure hottub cartridge

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The poolpure hottub cartridge is capable of outshining several other cartridge featured in this list in overall features for the price point. This PoolPure Spa Mineral Stick is supposed to last at least 4 months. It fits many sized hot tubs. The PoolPure spa mineral contains the highest quality tourmaline ceramic ball, magnesium granule, and zeolite to smooth your skin and protect your health. The mineral stick is easy to use and just slips inside of the filter cartridge. It comes with a 2 piece extender.

The PoolPure spa mineral stick can add trace minerals to the hot springs, reducing impurities in the hot springs to create clearer and cleaner water, making you feel as comfortable as you are in a pure natural hot spring. It has two extension rods so you can vary the height depending on your filter size. It comes with moderate use and the water may develop a minimal decrease in clarity. This product is easy to install.

Why We Like This:

Was simple to install, comes with 2 piece extender
Easy to install, and universal fit
Light beam easily visible at night
Great success with this mineral sanitizer

Best For Use: Vickmons hottub cartridge

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The vickmons hottub cartridge's material feels more premium than its price would suggest. The Spa Mineral Stick works with an existing filtration system, designed to fit most spa and hot tub filters, available for 24 hours of flow, and the maintenance cost is extremely low, helping to save your time and cost. It ensures optimal spa water maintenance, bringing you clean and crystal-clear spa water. It is suitable for use in spas and hot tubs up to 500 gallons/2000 liters, and are suitable for all major hot tub brands, such as sundance spas.

The Sun Purity has stickers to tell when to change them. The replacement filter is nicely packaged and looks identical to the OEM filter.

Why We Like This:

Easy to install and low maintenance
Plastic, mineral cartridges contain silver and activated carbon filter particles
New and hot release

Best Easy To Use: Frog mineral cartridge

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Frog serene is a complete sanitizing system that kills bacteria 2 ways with a low level of bromine and frog sanitizing minerals giving you peace of mind. It includes 1 frog sanitizing mineral cartridge, which lasts 4 months. The Frog serene replacement cartridges give you weeks and weeks of ahhmazing hot tub water, and fit the floating or in-line system.

It is ideal for 600 gallon hot tub. The mineral cartridge lasts about 3-4 months.

Why We Like This:

Convenient way to treat hot tub
Minerals kill bacteria, condition the water for softness and absorb acids
Frog sanitizing minerals reduce bromine use up to
Prefilled cartridges mean no touching or measuring bromine