I find the most efficient test kits to be the ones where you add 'liquid' droplets to the pond water. In the past, I've found the tablet test kits to be inaccurate as the tablets don't dissolve properly (especially when the water is cold) and the 'stick' test kits don't, in my opinion, show the changes accurately enough, especially with ammonia and nitrite. The tiniest amount of ammonia and/or nitrite in the pond is bad news, and I find it difficult to detect that change on the stick tests.
So, IMHO, go for the liquid test kits ... there are a number around and are all pretty much the same ... and are very accurate.
Posted on Feb 16, 2007, 4:36 PM from IP address 195.93.21.70