Tetra Pond Test 5in1 is a simple to use dip test for instantly checking water quality.
Simply dip the test strip in the water for a few seconds and then wait a minute for it to change colour. Then just compare the colours to the chart on the pack to get your readings.
Tetra recommend testing every 2-3 days in new ponds and once a week in established ponds. Always read the instructions before use.