Blue-green algae has been ... time to resolve the problem of blue-green algae in the lough," he stated. "Also the fact that there's been very good, dry weather. Unusually dry weather.

Brown algae, especially kelp, are used to extract another gel-forming product called algin. Algin absorbs water to make gels and thick solutions and can be found in ice creams and dry baking mixes.

Gerry Darby from Lough Neagh partnership says he is "not surprised" by the return of the blue ... blue-green algae in the lough," he stated. "Also the fact that there's been very good, dry weather.