A single-parameter kit for carbonate hardness, the reading that decides whether pH stays put. KH is the water's buffering reserve: with enough of it, pH holds through feeding, water changes and plant growth; without it, pH swings, and swinging pH stresses fish more reliably than a pH that is simply not ideal.
Read by drop count — each drop that changes the colour is one degree of hardness — so there is no upper limit to run past. Freshwater use.
What is in the kit
- 1 KH test solution bottle
- 1 glass test tube
- Instruction booklet
Looking after the kit
Rinse each tube with tap water straight after use — dried reagent stains the tube and throws out the next reading. Never wash tubes with detergent; the residue is harmful if it goes back into the tank. Shake the reagent bottles firmly, but invert the capped tube gently.
For general hardness as well, the GH and KH kit covers both in one box.
See the rest of the API range at PeekAPaw.
