The Marina Check Valve prevents water from siphoning out of the aquarium through the air hose and into the air pump in the event of a power failure or when removing filters and other air-driven accessories from the aquarium.

The Marina Ultra 2-way air control valve allows you to run up to 2 air-driven devices at once. Each valve has a flow adjuster which enables you to regulate air output to each devise.

The Marina Ultra 3-way air control valve allows you to run up to 3 air-driven products at once. Each valve has a flow adjuster which enables you to regulate air output to each devise.

The Marina Ultra 4-way air control valve allows you to run up to 4 air-driven products at once. Each valve has a flow adjuster which enables you to regulate air output to each devise.

The valve is leak-proof and suitable for fresh or saltwater aquariums. The valve can easily be hung on all standard aquariums.

The Marina i25 Replacement Power Cartridge is made specifically to fit inside the Marina i25 internal filter. The outside of the power cartridge features polyester foam to trap fine particles; while the inside chambers contain carbon to remove pollutants and odors; and zeolite to eliminate toxic ammonia for a cleaner, healthier aquarium environment and crystal clear water.                     

Note : For best results replace every 4 weeks.                

Key Features :

• 2-pack
• Provides mechanical, biological, and chemical filtration
• Polyester foam traps fine debris; carbon removes pollutants and odors; and zeolite eliminates toxic ammonia
• Easy to replace
• Designed to fit the Marina i25 Internal Filter (A131)

Marina Cool airline tubing is the perfect accessory for any air device. It is ideal for use with air stones, air-actuated ornaments and air-driven filters. Designed to fit all standard outlets, the airline tubing will remain supple and retain its shape.

Size : 2 m (6.5 ft)

The Marina air stone is ideal for adding accents in any aquarium the air stone diffuses air, creating water movement. The air stone also increases surface agitation, accelerates oxygen replenishment and helps release carbon dioxide build-up.

Simply connect the air stone to your airline tubing and place it in the desired location. Cylindrical shape.

Available Sizes:

• 2.84 cm (1.5 in) ; 1-pack.  
• 2.84 cm (1.5 in) ; 2-pack.   
• 2.84 cm (1.5 in) ; 4-pack. 

Marina Medium Algae Scrubber is suitable for small glass and acrylic aquariums. It has a reinforced plastic handle that makes removing algae and other deposits from your tank an easy job.

It also features a unique angled cleaning head that provides better control, increased pad-to-surface contact, and easier access to hard-to-reach areas.

Available Sizes: Medium / Large

The Marina "T" connector allows you to split air coming from the air pump into two even and constant air streams to separate air-driven devises in your aquarium. The plastic and non-corrosive connector is safe for use in salt water aquariums.

The Marina Betta Buffet blocks are the ideal vacation food. No need to worry about your Betta if you go away. The buffet block will slowly release all essential multi-vitamins and nutrients over a period of 7 days and this without clouding the water. Contains 6 buffet blocks per package.

Available Size: 12 g