Aquascape Test Kit – KH / Alkalinity

Keeping your pond’s alkalinity in check is key to healthy water and fish. The Aquascape KH (carbonate hardness) Test Kit helps you easily monitor the buffering capacity of your pond or aquarium water, helping to stabilise pH and support fish health.

With 60 tests per kit, it’s simple to stay on top of KH levels, especially after water changes or when using additives. Clear instructions make testing quick and accurate, even for beginners.

Features

  • Measures carbonate hardness (KH) / alkalinity
  • Includes 60 easy-to-use tests
  • Helps stabilise pH and prevent sudden changes
  • Essential for healthy biological filtration and fish safety
  • Ideal for ponds and aquariums

Why Monitor KH / Alkalinity?

KH helps your pond maintain a stable pH. Without enough buffering capacity, pH can crash – stressing or even killing fish. Testing weekly, especially after rain or top-ups, keeps your water safe.

More Water Testing + Treatments

Pro tip: Use with Aquascape Alkalinity Booster to correct low KH and improve water stability.

Not sure what your KH should be? Ask us — we’ll help you test and treat your pond properly.