Do solar bed covers attract insects or promote algae growth, and how can I prevent these issues?

Question

Tyler Smith · Accepted Answer

Buyers frequently ask about the potential for solar bed covers to create an environment conducive to insects or algae. While a solar bed cover's primary function is to heat your pool and reduce evaporation, the warm, moist conditions underneath can, in some cases, indirectly influence these issues. It is not the cover itself that attracts insects, but rather the warmth of the water can become more appealing to some species, particularly mosquitoes if there are small openings where they can access the water for breeding. However, a properly fitted and maintained cover will largely prevent this.

Regarding algae, a solar cover does not directly cause algae. In fact, by reducing evaporation, it can help maintain chemical levels more consistently, which should, in theory, inhibit algae. However, if your chemical balance is already suboptimal, the warmer water beneath the cover can accelerate algae growth. For instance, if your chlorine levels are too low, warmer water provides an ideal breeding ground. Algae needs sunlight to photosynthesize, and while many solar covers allow some light penetration, they significantly reduce the full spectrum. The critical factor is adequate water circulation and consistent chemical sanitization.

To prevent insects, ensure your cover fits snugly, minimizing gaps around the edges. Promptly remove any standing water on top of the cover after rain. For algae prevention, regular water testing and chemical balancing are paramount. Maintain proper chlorine levels (or your chosen sanitizer), alkalinity, and pH. Many users find that running their pool pump and filter for adequate periods, even with the cover on, helps circulate chemicals and prevent stagnant spots. Some advanced solar covers are treated with UV inhibitors that can also help mitigate bacterial and algal growth by blocking specific light wavelengths, though chemical balance remains the most important defense. Based on thousands of verified purchases, consistent pool maintenance is the best strategy against both insects and algae, regardless of cover use.