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The API SALTWATER MASTER TEST KIT is housed in a plastic container with a blue lid and features fish illustrations on its label. It provides accurate testing for high range pH, ammonia, nitrite, and nitrate, ensuring over 550 reliable tests for marine aquariums.
The API SALTWATER MASTER TEST KIT features a plastic container with a blue lid. The label provides product details, instructions, and safety warnings for testing saltwater aquarium conditions to ensure marine life health.
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API SALTWATER MASTER TEST KIT

$44.99
The API KH TEST KIT measures carbonate hardness in aquarium water, promoting a healthy environment for tropical fish. The blue and white packaging displays images of colorful fish and includes benefits in English and French.
The API KH TEST KIT box, in blue and white, highlights its user-friendly design and pH-stabilizing accuracy with descriptions in English and French. Lot and expiration dates are included for convenience.
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API KH TEST KIT

$9.99
The API GH/KH Test Kit features blue and white packaging with illustrations of plants, fish, and a test vial. Its designed for freshwater aquariums to promote a natural habitat, ensuring optimal conditions for aquatic life.
Box of the API GH/KH TEST KIT for freshwater fish and plants; includes English and French instructions to measure General Hardness (GH) and Carbonate Hardness (KH). Safety hazard symbols are clearly displayed at the bottom.
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API GH/KH TEST KIT

$13.99
-50%
A black power cable with two rectangular connectors, coiled neatly on a white background.
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NEPTUNE 1 LINK MALE FEMALE EXTENSION CABLE 10 FT CBL-1LINK-EXT

Original price was: $21.99.Current price is: $10.99.
A digital INKBIRD ITC-306A temperature controller in an open cardboard box, with a user manual and probe cables placed beside it on a white surface.
A cardboard box with INKBIRD printed in blue on the side, featuring two fish outlines inside a circle. The box is closed and sits on a white background.
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INK BIRD WIFI AQUARIUM HEATER CONTROLLER 2 PROBES

$59.99
Two packets of Seachem Bottle Adapters, labeled Sr and Md, are displayed side by side. The packaging is white and blue, showing images of the adapters, with text detailing their use for dosing pumps.
Back of a white product package with black text in multiple languages, including instructions and information. A barcode and QR code are visible at the bottom, and Made in the USA is printed on the lower right.
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Select options This product has multiple variants. The options may be chosen on the product page

SEACHEM BOTTLE ADAPTERS 6 PK

$4.49
A black and red box of AQUATOP No-Volt Titanium Grounding Probe, showing the probe and cord on the front. The packaging advertises an 11-year extended warranty.
A product box for the Aquatop NO-VOLT Titanium Grounding Probe. The box features red and black colors, the Aquatop logo, a product description, instructions, and a small certification mark near the bottom right corner.
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AQUATOP NO-VOLT TITANIUM GROUNDING PROBE

$13.99
A green and black electronic sensor probe with a long black cable and connector, placed on a white background.
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MILWAUKEE PH PROBE 2 METER CABLE MA911B/2

$49.99
The HANNA MARINE MAGNESIUM CHECKER box highlights its accurate 1350 reading. This handheld colorimeter from Hanna Instruments is designed for aquariums and marine biology enthusiasts, featuring an open cap.
Box of a HANNA MARINE MAGNESIUM CHECKER. The packaging includes product specifications, contents, and accessories list.
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HANNA MARINE MAGNESIUM CHECKER

$74.99
A 60 mL bottle of Brightwell Refractometer Calibration Standard with a black cap, labeled with specific gravity, refractive index, and salinity information—ideal for precise calibration.
The BRIGHTWELL REFRACTOMETER CALIBRATION STANDARD 60 ML is presented in a sleek, black plastic bottle with a pointed nozzle cap, featuring a barcode and instructions on usage. The plain white background accentuates its elegant design.
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BRIGHTWELL REFRACTOMETER CALIBRATION STANDARD 60 ML

$6.99
The HANNA GRADUATED PIPETTE 100 MICROLITER is attractively showcased in clear plastic with two tips, featuring printed instructions on a white background for easy use and optimal centering.
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HANNA GRADUATED PIPETTE 100 MICROLITER

$32.99
Packaging for HANNA CUVETTES FOR CHECKER 2 PK features a clownfish image, text HI731315 Cuvettes for use with Checker®HC, and indicates 10 mL level mark with optically clear glass. The box contains 2 glass cuvettes with black caps.
The HANNA CUVETTES FOR CHECKER 2 PK includes two cuvettes and two caps for Marine Checker, featuring recycling and fragility symbols. Designed exclusively for laboratory and industrial use.
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HANNA CUVETTES FOR CHECKER 2 PK

$15.99
Two sachets of HANNA SALINITY CALIBRATION SOLUTION 20 ML are displayed, showing blue text on white packaging. Each 20 mL sachet advises avoiding freezing and storing at room temperature for lab and industrial use.
A silver foil packet labeled HANNA SALINITY CALIBRATION SOLUTION 20 ML contains detailed information such as the lot number, expiration date, and manufacturing info. The blue company logo is prominent on the packet, designed for precise instrument calibration at 35.00 ppt.
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HANNA SALINITY CALIBRATION SOLUTION 20 ML

$2.49
A HANNA PH CALIBRATION SOLUTION PACKET, designed for accurate pH 7.01 calibration, features sleek silver packaging with the brand logo and product name, containing a handy 20 mL solution.
A white HANNA PH CALIBRATION SOLUTION PACKET shows a green and white grid with temperature (°C and °F) and pH values for a pH 7.01 buffer, including contact info for instructions.
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HANNA PH CALIBRATION SOLUTION PACKET

$1.79
-50%
A sleek black NEPTUNE TEMPERATURE PROBE PRBTMPJR with a long cable and cylindrical design sits on a white background, perfect for precise temperature measurement.
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NEPTUNE TEMPERATURE PROBE PRBTMPJR

Original price was: $32.99.Current price is: $16.49.
-50%
The compact black Solid-Surface Leak Detection Probe, part of Neptune Systems LEAK DETECTION KIT LDK, includes a cable with an Ethernet-like connector coiled neatly beside it and is shown resting on a white background.
The gray Neptune Systems Fluid Monitoring FMM, a rectangular device with multiple ports and indicator labels, pairs with the NEPTUNE LEAK DETECTION KIT LDK to enhance security.
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NEPTUNE LEAK DETECTION KIT LDK

Original price was: $154.99.Current price is: $77.49.
-50%
The 3ft Neptune Systems Aquabus Cable (ABUS3) is coiled in black with standard USB-A connectors on both ends, displayed elegantly against a plain white background.
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NEPTUNE AQUABUS CABLE 3 FT MALE MALE ABUS3

Original price was: $13.99.Current price is: $6.99.
-50%
The NEPTUNE 10 DC24 EXTENSION CABLE (M/F) is a coiled black power cable with a right-angle connector, perfect for electronic devices needing male-to-female connectivity.
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NEPTUNE 10′ DC24 EXTENSION CABLE (M/F)

Original price was: $18.99.Current price is: $9.49.
A front view of the HANNA MARINE ALKALINITY CALIBRATION CHECK SET box, featuring the Checker HC handheld colorimeter model HI755-11. This includes 1 certified standard kit, ideal for laboratory and industrial use, ensuring precise results with ease.
The HANNA MARINE ALKALINITY CALIBRATION CHECK SET features two glass vials, one with clear liquid and one blue, arranged in a black tray; it includes a Certificate of Analysis from Hanna Instruments for accuracy validation.
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HANNA MARINE ALKALINITY CALIBRATION CHECK SET

$18.99
A testing kit is displayed with a black plastic case containing the yellow HANNA AMMONIA LOW RANGE CHECKER, two small bottles labeled nitro and nitro reag, two glass vials, and an instruction booklet.
The back of the HANNA AMMONIA LOW RANGE CHECKER box, primarily white with blue accents and the Hanna Instruments logo, displays safety icons, a hazard warning label, instructions, website info, and recycling symbols at the bottom.
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HANNA AMMONIA LOW RANGE CHECKER

$74.99
White box of HANNA MARINE ALKALINITY REAGENTS (dKH) for Seawater features 25 tests and a 1 mL plastic syringe. The packaging displays a vibrant purple and white coral image with HANNA branding at the top.
Box of HANNA MARINE ALKALINITY REAGENTS includes a 30 mL bottle and a 1 mL syringe, set against a microscopic water texture background.
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HANNA MARINE ALKALINITY REAGENTS

$18.99
The TETRA EASY STRIPS COMPLETE KIT 25 PK provides a simple solution for aquarium testing, including ammonia and water quality strips for freshwater and saltwater in striking blue and yellow packaging.
The TETRA EASY STRIPS COMPLETE KIT 25 PK provides a complete aquarium test solution measuring chlorine, ammonia, nitrate, nitrite, alkalinity, hardness, and pH. Featuring vibrant fish illustrations and simple Just dip & read instructions, its ideal for aquarium enthusiasts.
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TETRA EASY STRIPS COMPLETE KIT 25 PK

$29.99
The sleek black MILWAUKEE DIGITAL REFRACTOMETER MA887 features a rectangular digital display, circular sensor area, and prominently displays the logo near the bottom. It includes green labeled buttons: READ, ZERO, RANGE, ON, and OFF.
The packaging of the MILWAUKEE DIGITAL REFRACTOMETER MA887 highlights a circular logo, dual-level LED readout, and automatic temperature compensation on a sleek black background featuring website and product images.
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MILWAUKEE DIGITAL REFRACTOMETER MA887

$175.99
The HANNA PHOSPHATE ULTRA LOW RANGE CHECKER comes with a green handheld colorimeter featuring a clear digital display at 0.50 ppm, ideal for measuring phosphate levels in aquariums and marine biology. This compact, user-friendly device is efficient and perfect for precision measurement.
The HANNA PHOSPHATE ULTRA LOW RANGE CHECKER packaging elegantly highlights its capabilities with specifications for marine phosphate ULR (ppm), lists included items, accessories, contact info, and safety symbols.
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HANNA PHOSPHATE ULTRA LOW RANGE CHECKER

$74.99
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