Quick assessment to evaluate the nitrite levels in both freshwater and marine aquariums and ponds Nitrite is a harmful nitrogen compound that arises when the bacterial ecosystem is disrupted or during the establishment of a new aquarium. This test provides precise measurements of the nitrite levels in your water. Utilizes a laboratory-grade comparator system to adjust for the natural color of the water: simply fill glass vials with your sample, add reagents to one vial, position the vials in the holder, and compare the results against the color chart. Application: when initializing a new freshwater aquarium, conduct tests daily for three weeks. For marine water setups, test once a week. Also recommended when dealing with fish illnesses or fatalities. For thorough instructions and troubleshooting advice regarding water testing, visit the JBL website under Essentials/Aquarium or Pond. Included in the package: 1 nitrite test kit providing approximately 50 measurements, complete with 2 reagents, 2 glass vials with screw tops, a syringe, a comparator block, and a color scale. Reagent refills are available for purchase separately. Expires on 30 Jun 2026

Quick assessment tool to measure nitrate levels in freshwater and marine aquariums and ponds. It helps identify the ideal nitrate concentration for thriving plant growth or the potential reasons for algae proliferation in both freshwater and saltwater environments.Expires on 30 Nov 2026

A fast and effective way to measure acidity levels in ponds, as well as in freshwater and marine aquariums. This tool allows for straightforward and dependable tracking of your water parameters. It identifies the optimal pH level for both freshwater and saltwater environments.Expires on 31 Jul 2028

Gravel substrate cleaner designed for aquariums measuring 10-35 cm in height Compact yet highly efficient gravel cleaner to effectively siphon waste from smaller aquariums Instructions: Submerge the gravel cleaner in the water, briefly suck on the hose to start the flow, and let the water drain into your bucket. Insert the cleaner into the substrate, and the suction will extract debris from the base The square design allows for easy waste removal from the corners of your aquarium Animal-friendly: the detachable protective sieve ensures that plants, shrimp, and fish are kept safe from being accidentally sucked in Included in the package: 1 gravel cleaner with a diameter of 35 mm, a height of 12.5 cm, along with a 1.5 m hose (9/12 mm)

An advanced and efficient gravel cleaner designed to effectively remove waste from aquariums with a height of 20 cm and above Instructions: shake the gravel cleaner, allow water to flow into the bucket, siphon the debris from the substrate, and close the stopcock once completed A dedicated corner on the round gravel cleaner creates a strong whirl effect, making it easy to navigate and eliminate dirt from the corners of your aquarium The removable protective sieve keeps plants, shrimp, and fish safe from being unintentionally sucked in and can be cleaned with ease Contents of the package: 1 gravel cleaner with suction valve, Ø 4 cm, length 27 cm, includes a 2 m hose (12/16 mm), 2 hose clips, and a stopcock

Gravel cleaner designed for maintaining aquariums with heights ranging from 45 to 70 cm An advanced and efficient gravel cleaner that effectively siphons away debris in aquariums starting from 45 cm in height Instructions: Shake the gravel cleaner, allow water to fill the bucket, siphon out the waste from the substrate, and close the stopcock once you're done The round design features a corner that aids in maneuvering dirt and accessing the aquarium's corners during use Animal-friendly: the removable protective sieve ensures that plants, shrimp, and fish are safeguarded from accidental suction Included in the package: 1 gravel cleaner with a suction valve, 4 cm diameter, available in lengths of 27 or 46 cm, complete with a 2 m hose (12/16 mm), 2 hose clips, and a stopcock

A highly functional complete kit designed for performing partial water changes while also cleaning the substrate in aquariums with a height ranging from 45 to 70 cm, featuring a water jet pump for convenient tap connection. Simple installation: connect the gravel cleaner (substrate cleaner) to the suction pump attached to your water tap using the hose. After siphoning the bottom of the aquarium, simply shift the lever on the tap pump to refill the tank. Self-priming mechanism: the water jet from the tap generates suction, allowing it to work even if the aquarium is positioned lower. The gravel cleaner's uniquely rounded cross-section allows it to access difficult-to-reach areas. No more heavy lifting of water buckets. Enjoy a smooth and secure water flow, with the hose firmly held in place by a hose clip and a direct connection to the water tap. Set includes: 1 complete water changing kit with an 8 m hose, gravel cleaner measuring 27-46 cm in length, thread adapter for sizes 3/4’’ to 22 x 1; 24 x 1; 28 x 1, 2 hose clips for secure fastening, and 1 water jet pump.

Internal filter designed for aquariums ranging from 10 to 40 litres. Key Features: • Ensures crystal clear and oxygen-rich water: this internal filter is perfect for 10-40L aquariums with an adjustable pump capacity of up to 200 l/h. • Simple installation: attach the suction cups to one side of the filter (both sides can be used), press the filter into the desired position, ensuring that the water outlet is approximately 2cm below the water surface. • Safe for small fish and shrimp: designed with a fine-pored surface to prevent sucking in, the water outlet can be rotated and adjusted to any capacity for aquariums starting from 14cm in height. • TÜV certified, comes with a 4-year warranty, energy efficient (3.7W), dimensions: (LxWxH) 7.6 x 4.1 x 12.0 cm. Can be expanded with additional filter modules.

Compact 18 W UV-C Water Clarifier for Eliminating Water Cloudiness Key Features • Achieve crystal-clear and healthy water: This 18 W UV-C water clarifier effectively and swiftly removes green and white cloudiness in both freshwater and marine aquariums, as well as garden ponds. • Space-efficient design: Easily connects to an external filter or a separate pump. The inlet and outlet are thoughtfully positioned for convenience. Minimum installation length: 42 cm. • Germ-destroying UVC radiation that lowers infection risks, maintains water quality, and does not impact the beneficial bacteria in your filter. • TÜV certified with a safety switch: The UV-C bulb automatically turns off when the device is opened. Features a robust, UV-resistant housing and a dual glass cylinder construction. • Package includes: complete UV-C unit, 5 m power cable, 18 W UV-C bulb, socket: 2G11, wall mounting hardware, V2A screws, and nozzle hose connections for hoses ranging from 12 to 40 mm. Warranty: 2 years (+ an additional 2 years with product registration).  

Compact 5 W UV-C water clarifier designed to tackle water cloudiness. Achieve crystal-clear and healthy water with the fast and effective removal of green and white murkiness.

Ensure crystal-clear and healthy water: The 36 W UV-C water clarifier effectively removes green and white cloudiness in both freshwater and marine aquariums, as well as garden ponds. Compact design: Easily connects to an external filter or a separate pump. The inlet and outlet are conveniently positioned for user-friendly operation. Minimum installation length: 61 cm. Provides partial sterilization for aquariums up to 3000 liters (using a pump with a maximum flow of 1000 l/h) and ponds up to 15,000 liters (with a pump maxing out at 4000 l/h), effective against floating algae in aquariums up to 800 liters (pump max. 1000 l/h) and ponds up to 8000 liters (pump max. 4000 l/h). TÜV certified with a safety switch: The UV-C bulb will automatically turn off when the device is opened. Built with a durable, UV-resistant casing and a dual glass-cylinder design. Included in the package: complete UV-C unit, 5 m power cable, 36 W UV-C bulb, socket type 2G11, wall mounting hardware, V2A screws, and nozzle hose connections suitable for 12 - 40 mm hoses.

Complete CO2 fertiliser system set featuring a refillable cylinder designed for lush and thriving aquarium plants. Plug-and-play CO2 fertiliser system. It delivers the perfect amount of CO2 for all freshwater aquarium plants in tanks ranging from 40 to 300 liters while inhibiting algae growth. Easy to assemble: simply attach the pressure reducer to the cylinder, connect the hose to the bubble counter/check valve and diffuser, adjust the bubble count – and you’re all set! Refillable storage cylinder. Secure hose connections prevent slippage, and the check valve stops water from entering the cylinder. The appropriate CO2 level in your aquarium water is monitored with the included CO2/pH permanent test display, which can be adjusted as necessary. Included in the package: a 500 g refillable CO2 cylinder with wall mount, pressure reducer, 3 m hose, bubble counter with check valve, ceramic diffuser, permanent test with reagents, 2x plant fertiliser (100 ml each), and 1x daily fertiliser (10 ml). Expires on 30 Sep 2027

Bubble counter featuring a backflow prevention mechanism. Key Features: • Easily regulate CO2 levels: this bubble counter with backflow prevention allows for precise dosing of CO2 in your aquarium. • Simply fill the bubble counter with water, connect it to your CO2 system and diffuser with a hose, and secure it outside the aquarium using either 2 suction cups on the glass or 2 screws on the furniture. • Simple bubble observation: CO2 bubbles are easily visible and countable, with no risk of backflow due to the integrated check valve, compatible with all standard CO2 systems. • The reliable hose screw connection ensures that hoses remain securely attached, preventing unintentional disconnections.

Elegantly designed small glass diffuser that effectively dissolves CO2 in your aquarium water, promoting optimal plant growth Setup: connect the diffuser to a CO2 hose (4/6) and secure it near the bottom of the tank using the included suction cup Consistent outflow & efficient distribution: crafted from specialized ceramic for exceptionally fine CO2 bubbles, featuring a built-in ceramic diaphragm Simplified cleaning: submerge the entire diffuser in a cleaning solution (JBL PROCLEAN POWER) for 24 hours Included in the package: 1 glass diffuser and 1 suction cup with a clip

Highly effective CO2 enrichment ensures optimal plant growth in your aquarium when installed within the filter return hose. Simply cut the water return hose from your external filter, moisten the diffuser membrane, attach the INLINE DIFFUSER, connect the CO2 supply hose, and set the bubble count. An integrated bubble counter allows you to monitor the CO2 levels, and water backflow protection is built in to safeguard the technical components. Enjoy a 20% reduction in CO2 usage, thanks to the exceptionally efficient diaphragm. Package includes: 1 high-performance CO2 direct diffuser ready for connection, along with a wall mount, suction cup, and screw attachment.

High-efficiency CO2 diffuser designed for installation within the filter hose of an external filter Provides highly effective CO2 enrichment, promoting optimal plant growth in your aquarium by being positioned inside the filter return hose Simply cut the water return hose from the external filter, moisten the diffuser membrane, install the INLINE DIFFUSER, connect the CO2 supply hose, and set the bubble count Includes a built-in bubble counter to monitor the CO2 levels, along with backflow protection to safeguard the equipment Achieve a 20% reduction in CO2 usage due to the specially designed diaphragm Package contains: 1 high-performance CO2 direct diffuser ready for connection, along with a wall mount, suction cup, and screw fastener