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Alkaline Buffer™ is a non–phosphate buffer to raise pH and alkalinity (KH) and buffer with Acid Buffer™. These buffers are designed for the planted...

ISTA Replacement Ceramic for 3 in 1 Diffusers (Choose Size)

Item is easy to install. The hose mechanism is quite simple (similar to canister filters).2 in 1 functions: CO2 bubble counter and check valve.CO2 ...

Acrylic material allows accurate CO2 bubble reading and longer operation life.Compact size, streamline design.

Suitable for any kinds of CO2 regulator or air pump. Divide one regulator into three and control three regulators at the same time.

Suitable for any kinds of CO2 regulator or air pump. Divide one regulator into three and control three regulators at the same time.

These are the most practical diffusers available. Into a single piece, you have a check valve, a bubble counter and the diffuser. Also very importa...

Item is easy to install. The hose mechanism is quite simple (similar to canister filters), it's perfect to use with the MAX MIX CO2 REACTOR, becaus...

API® TEST TUBES are compatible with any aquarium or pond water test kits and are perfect for testing more water parameters at one time. The pack in...

Copper – a treatment for many parasitic infections – must be monitored in an aquarium or a pond. The copper level can drop too low for the treatmen...

Phosphate can enter your aquarium through tap water, fish waste, and decaying organics such as uneaten food and dead algae. Excess phosphate contri...

When keeping freshwater fish and plants, the general hardness (GH) and carbonate hardness (KH) of aquarium water should match their natural habitat...

Nitrite is produced in the aquarium in the forms of fish waste, uneaten food, and by nitrifying bacteria in your aquarium’s natural cycle as it bre...

The API® AMMONIA TEST KIT measures ammonia to help prevent fish loss, as ammonia is the number one stressor and killer of tropical fish. Ammonia is...

High nitrate levels in your aquarium indicate a build-up of fish waste and organic compounds, resulting in poor water quality and an increase in al...