Is there less algae growth with a blue solar blanket over a clear solar blanket?

The color of the blanket is not rellevant. However, algae multiplies much faster in warm water and gas trapped under a solar cover can be converted into algae food. The cover should be removed during peak heating hours and put back on afterwards.

Pool water gets hot without the cover all on its own. The cover is to prevent heat loss more than to multiply heat gain. We see many more pools with algae if covered all the time rather than those where the cover is removed often.

Pool & Spa

The colour of a blanket can make all the difference... there is a swimming pool cover called EnergyGuard. It has been proven to stop algae growth, as well as saving time, money, water and energy usage. The product is unique with its dark blue top surface and a black underside. This means that the cover absorbs the sun's heat while blocking the sunlight from entering the water, therefore stopping photosynthesis and algae growth. A UK test lasting two months established that a pool with an EnergyGuard cover remained clear of algae without chemical treatment. In a winter test from October 2008 to April 2009, a UK pool was covered with an EnergyGuard cover and a woven mesh debris cover. No winter pool chemicals were used. The water was clear of algae after the 6 month winter period.

Hope that is useful

Thanks

Emma