Check2O Aquarium Test Strips 6 in 1 (Nitrate, Nitrite, pH, Total Hardness, Alkalinity, Free Chlorine)

Check₂O Aquarium 6 in 1 Test Strips
Check₂O 6 in 1 test strips provide a quick and comprehensive method for monitoring water quality in aquariums and ponds. Each strip measures six key parameters essential for maintaining a healthy aquatic environment, helping to prevent imbalances that can harm fish and plants.

Convenient Form Factor
Each pack contains 50 test strips, securely housed in a moisture-resistant plastic container for convenient access and long-term storage. Simple dip-and-read operation ensures reliable results within seconds.

Measurement Parameters and Graduations
Nitrate (NO₃⁻): 0 – 10 – 25 – 50 – 100 – 250 mg/L
Nitrite (NO₂⁻): 0 – 0.5 – 1 – 5 – 10 mg/L
Total Hardness (as CaCO₃): 0 – 4 – 8 – 16 – 21 °d
Free Chlorine (OCl⁻): 0 – 0.8 – 1.5 – 3.0 mg/L
pH: 6.4 – 6.8 – 7.2 – 7.6 – 8.0 – 8.4
Alkalinity (as CaCO₃): 0 – 3 – 6 – 10 – 15 – 20 °d

Reliable and Easy to Use
Designed for both hobbyists and professionals, these strips provide accurate colour changes that are easy to compare against the included reference chart. Regular testing ensures stable, healthy water chemistry for all freshwater and marine systems.

Shipped from our Manchester, UK Facility
All Check₂O products are securely packaged and distributed from our Manchester-based facility, ensuring fast and dependable delivery across the UK.

Frequent Uses

Aquariums
Monitor key water parameters to maintain a balanced environment for fish and aquatic plants.

Ponds
Track water chemistry in garden and ornamental ponds to prevent algae growth and fish stress.

Aquaculture and Breeding Tanks
Ensure consistent water quality conditions for breeding, hatching, and rearing aquatic species.

• Aquarium water monitoring

• Pond water quality testing

• Breeding and quarantine tanks

• Aquaculture system checks

• Routine maintenance testing

Product Name: Check₂O Aquarium 6 in 1 Test Strips

Number of Parameters: 6

Parameters Measured: Nitrate (NO₃⁻), Nitrite (NO₂⁻), Total Hardness (as CaCO₃), Free Chlorine (OCl⁻), pH, Alkalinity (as CaCO₃)

Nitrate (NO₃⁻): 0 – 10 – 25 – 50 – 100 – 250 mg/L

Nitrite (NO₂⁻): 0 – 0.5 – 1 – 5 – 10 mg/L

Total Hardness (as CaCO₃): 0 – 4 – 8 – 16 – 21 °d

Free Chlorine (OCl⁻): 0 – 0.8 – 1.5 – 3.0 mg/L

pH: 6.4 – 6.8 – 7.2 – 7.6 – 8.0 – 8.4

Alkalinity (as CaCO₃): 0 – 3 – 6 – 10 – 15 – 20 °d

Pack Size: 50 test strips

Container Type: Plastic tube