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December 2, 2025
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Category/Manufacturer
Item#
HI70300L Electrode Storage Solution 500ml Bottle
HI70300L
pH Electrode Storage Solution (500 mL)
HI70300L is an electrode storage solution prepared with reagent grade chemicals that can (read more . . .)
Catgeory Testing & Controllers*
Mfg Hanna Instruments Log in to see price   •NEW•   HN121
Ammonia Alert
Ammonia Alert is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow (read more . . .)
Catgeory Testing & Controllers*
Mfg Seachem Log in to see price   SC6626
Reef Master Test Kit
As a reef keeper, you already know how important water testing is to your thriving aquarium. But you are ready for more sensitive species that r (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1030
Calcium (Ca) Test Kit 0.5oz 15ml
This test monitors the calcium level easily and precisely in steps of 20 mg/l (ppm). For approx. 7,500 mg (ppm) calcium. Add sera marin COMPONENT (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER252
Magnesium (Mg) Test Kit 0.5oz 15ml
For monitoring magnesium levels in marine aquariums easily and safely. The magnesium level can be increased with sera marin COMPONENT 6 magnesium (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER253
Ammonia Test Kit
Maintaining good water quality is the key to successful fishkeeping.
Ammonia is the number one killer of both saltwater and freshwater fish. (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH7057
Carbonate Hardness/General Hardness (KH/GH) Test Kit
The general hardness (GH) and carbonate hardness (KH) of aquarium water should match that of the natural habitat of the fish. Otherwise, fish wi (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH7076
Freshwater Master Test Kit
Testing water is the single most important task an aquarist must perform in order to maintain a healthy, thriving aquarium. This kit makes it qu (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1006
Saltwater Master Test Kit
Testing water is the single most important task an aquarist must perform in order to maintain a healthy, thriving aquarium. This kit makes it qu (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH1007
Carbonate Hardness (KH) Test Kit
Tests tap water, fresh or saltwater aquariums for carbonate hardness (KH). Can be used to determine the proper dose of pH buffers. (read more . . .)
Catgeory Testing & Controllers*
Mfg API Mars Fishcare Log in to see price   APH7075
HI780-25 pH Reagent 100 Tests*
HI780-25 pH Reagent is the replacement reagent for the HI780 Saltwater PH Checker. (read more . . .)
Catgeory Testing & Controllers*
Mfg Hanna Instruments Log in to see price   HN130
HI781-25 Nitrate Reagent 25 tests
HI781-25 Nitrate Reagent is the replacement reagent for the HI781 Saltwater Low Range Nitrate Checker (read more . . .)
Catgeory Testing & Controllers*
Mfg Hanna Instruments Log in to see price   HN131
PRO Portable Dissolved Oxygen Meter MW600  
Description
The Milwaukee MW600 PRO Portable Dissolved Oxygen meter is one of Milwaukee's most popular meters with its reliable and fast oper (read more . . .)
Catgeory Testing & Controllers*
Mfg Milwaukee Log in to see price   MIL1003
pH Test Kit 0.5oz 15ml
Makes it easy to monitor the pH value in fresh and marine water and ponds. For approx. 100 measurements. In case of too low pH values we recommen (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER460
Carbonate Hardness (kH) Test Kit 0.5oz 15ml
Makes it easy to monitor the carbonate hardness in fresh and marine water. For approx. 390°dKH. In case of too low KH values we recommend sera K (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER461
General Hardness (gH) Test Kit 0.5oz 15ml
Makes it easy to monitor the total hardness. For approx. 420°dGH. In case of too low GH values we recommend sera mineral salt. High total hardne (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER462
Ammonium/Ammonia (NH4/NH3) Test Kit 0.5oz 15ml
Ammonium and ammonia mainly arise from fish waste. They are converted into each other depending on the pH value. While ammonium is mostly harmles (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER463
Nitrite (NO2) Test Kit 0.5oz 15ml
Nitrite (NO2) is among the most toxic substances for fish in aquariums. It can enrich in the water in case of insufficient biological filtration. (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER464
Nitrate (NO3) Test Kit 0.5oz 15ml
Nitrate (NO3) is an indicator for severe organic pollution. The source of this organic pollution should be eliminated, a partial water change pro (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER465
Phosphate (PO4) Test Kit 0.5oz 15ml
Both fish waste and feeding are possible causes for phosphate introduction into the water. A part is taken up as a nutrient by plants, an excess, (read more . . .)
Catgeory Testing & Controllers*
Mfg Sera Log in to see price   SER466
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