Water Testing for Experienced Pond Keepers
Experienced pond keepers check their pond water regularly. This allows taking measures, for instance against algae, quickly and easily, without the need to use chemicals.
Contents
| Test Parameter | Test Included |
|---|---|
| pH value | Yes |
| Total hardness (GH) | Yes |
| Carbonate hardness (KH) | Yes |
| Ammonium/ammonia (NH4/NH3) | Yes |
| Nitrite (NO2) | Yes |
| Nitrate (NO3) | Yes |
| Phosphate (PO4) | Yes |
| Iron (Fe) and Copper (Cu) | Yes |
FAQ
How often should I use the Sera Koi aqua-test box?
It is recommended to test pond water every 1 to 2 weeks, or more frequently if you notice changes in water clarity or plant health.
Can this test box detect harmful algae growth?
The test box does not directly detect algae. However, by monitoring parameters like pH, ammonia, and nitrate levels, you can identify conditions that may promote algae growth.
Are the test kits reusable?
No, the test kits are single-use and should be discarded after each test.

Carl Cornish –
I’ve used this test box for several months now and it’s become a regular part of my pond maintenance routine. The results are clear and easy to read. I can monitor pH and ammonia levels accurately, which helps me avoid overfeeding and prevent algae outbreaks.
Jacob Davidson –
The kit covers all the key water parameters I need. I especially appreciate the iron and copper tests, which help me keep my koi healthy. The instructions are straightforward and the test strips work reliably.
Anne Kerr –
As a long-time pond keeper, I value having a comprehensive test kit. This one gives me confidence in managing water quality without relying on chemical treatments. The only thing I wish was a digital reader for faster results.