Dymax Slim Flo Hang On Filter QT Tank, Emergency & Freshwater Aquarium Filter (SF-120 / SF-240 / SF-500)

Ships directly from our partner’s facility. Separate shipping is calculated at checkout, and it doesn’t qualify for TCR’s free-shipping offer.

The Dymax Slim Flo Hang On Filter 

This is the perfect solution for quarantine tanks, emergency setups, and small aquariums. Designed for quiet, efficient performance, this compact filter provides reliable mechanical and biological filtration when you need it most.

Whether you're setting up a quick QT tank or maintaining a nano aquarium, the Slim Flo delivers clean, clear water with minimal footprint.

A must have for any reef keeper ideal for quarantine setups and temporary filtration.

Why This Filter Stands Out

• Ideal for quarantine (QT) tanks and hospital setups
• Perfect for emergency filtration when you need a quick solution
• Slim, space saving design for smaller aquariums
• Quiet operation great for home or office use
• Easy to install and maintain

Perfect For

• Quarantine tanks
• Hospital tanks
• Temporary setups
• Nano aquariums
• Backup filtration systems

Also a great option for freshwater aquariums, offering reliable filtration in a compact design.

Available Sizes & Recommended Tank Use

SF-120

• Max Flow Rate: 30 GPH
• Recommended Tank Size: 1–4 gallons
• Perfect for nano tanks, betta tanks, and very small QT setups

SF-240

• Max Flow Rate: 60 GPH
• Recommended Tank Size: 5–8 gallons
• Ideal for small quarantine tanks and nano aquariums

SF-500

• Max Flow Rate: 125 GPH
• Recommended Tank Size: 10–24 gallons
• Great for larger QT tanks, hospital tanks, and small display aquariums

Pro Tip 

For quarantine tanks, choose a slightly higher flow model to ensure proper filtration and water movement.