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- Fresh Water
- Aquariums
- Anti-algae
- Heating systems
- Bacteria
- Fertilizers
- External filters
- Decorations
- Lighting systems
- Filters & accessories
- Internal filters
- Cooling units
- Spare parts
- Maintenance equipment
- Feeding
- Water pumps
- Osmosis plants & accessories
- Air pumps
- Aquatic plants
- PVC piping
- Substrate
- Treatments
- Tests
- Water Conditioners
- Ultraviolet (Uv)
- CO2 System
- Material Livestock
- Aquascaping
- Dosing pumps
- Osmolators
- Sea Water
- Measuring devices
- Marine additives
- Marine aquariums
- Bacteria
- Anti-algae
- Adhesives & sealants
- Heating systems
- Marine Decorations
- Denitrators
- Lighting systems
- Densimeters
- Foamers
- Fluidized seawater filters
- Filters and consumables
- Cooling units
- CO² System
- Maintenance equipment
- Feeding
- Biopellets
- Osmosis plants & accessories
- Spare parts
- Pumps
- Brewing pumps
- Air pumps
- Reflectors
- Limestone reactors
- Hydroxide reactor
- Salts
- Sand substrates
- Tests
- Water treatments
- PVC piping
- Ultraviolet (Uv)
- Heater-box bags
- Internal filters
- External filters
- Aquatic plants
- Pond
- Wabi-Kusa
- Terrarium
- Promotions
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Determines the ideal general hardness in freshwater aquariums and ponds.
Colour change test: fill plastic cuvette with sample water, add reagent drop by drop until colour changes from red to green.
Number of drops = level of general hardness When to use: for setting up a new aquarium: once a week, afterwards once a month.
You will find detailed information and troubleshooting tips about water analysis on the JBL website in Essentials/Aquarium or Pond.
Package contents: 1 GH quick test, incl. one reagent and plastic cuvette.
Reagent refill separately available.
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