TESTLAB – a set of 13 tests in a case

This JBL case is aimed at aquarium keepers who need to check water chemistry across several parameters without buying separate kits. It addresses the question of what is actually happening in the tank, from pH and carbonate hardness to nutrient levels and substances that can harm fish.

Why it matters

• Three pH test ranges: one covers 3.0 to 10, another 6.0 to 7.6, and a third 7.4 to 9.0, so the kit can be matched to the water being measured.
• CO2 from pH and KH: CO2 is not tested directly. It is read from a supplied table using the pH and KH results, which is relevant for planted tanks.
• Toxic compounds: ammonia is measured as NH4 and converted to toxic NH3 using a table, and nitrite is tested as the nitrogen compound that is toxic to fish.
• Causes of algae and fish losses: silica is tested as a source of algae growth, and copper as a possible cause of fish deaths.

Specifications

• Brand: JBL
• Model: JBL TEST LAB DUZA WALIZKA
• EAN: 4014162055736
• Number of tests: 13
• Tests included: pH (three ranges), O2, CO2, GH, KH, PO4, NH4/NH3, NO2, NO3, Fe, Cu, SiO2
• Weight: 2.4 kg

What it works with

The kit fits freshwater and planted aquariums, where pH, KH, CO2 and nutrient levels need regular checks. It is a general water testing set for the category Water, chemistry and tests, so it covers routine monitoring of tanks of different sizes. Results for CO2 and toxic ammonia depend on the supplied tables, so the readings should be interpreted together rather than one at a time.