Is your lake affected?

So is your water affected, and if so, to what extent?

Ask yourself some questions.

Has the water ever had an algae problem or does it suffer from excessive plant growth? Has it started to become dominated by one species of plant? Has the water become more turbid, does it resemble pea soup in summer? Have you noticed a decrease in the number of species of plants or insects present? Perhaps you have noticed a reduction in numbers, or species, of fish being caught?

If you have answered yes to one or more of the above, there is a possibility that your lake is suffering from the effects of eutrophication.

So how can you find out, for sure? Sadly the test kits from pet stores only measure the phosphorus in the water column and not the phosphorus locked up in the silt. Hence the only way to be totally sure is to find out the total level of phosphorus (P) present.

The procedure to obtain ‘Total P’ whilst not being expensive is quite a complex process and encompasses several steps. These include burning off excess organic matter at very high temperatures in an autoclave, then carrying out an acid digestion with oxidizing agent at 150C for one hour. Thereafter the phosphorus level is measured with a spectrophotometer.

It sounds complicated, and it is, however that’s where I, and my laboratory based associates come in. Only when this process is fully complete can we ascertain if, and to what extent, eutrophication affects your fishery.

As part of the service I can then begin the process of advising you on how to manage the problem. Call for a quote, you will be pleasantly surprised.