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They are primary producers at the root of many aquatic food chains, and an important component of biodiversity

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They are objects of great beauty in their own right and, unfortunately usually overlooked.
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They are very sensitive indicators of environmental conditions, and a study of their variety in water can reveal much about water quality


Understanding the role of algae in aquatic systems requires that we can distinguish their species, which can be a daunting undertaking initially. We at Algalweb aim to help you identify algae and appreciate their beauty and importance.

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Is Pool Algae Harmful to Humans [Expert Insights]
Green growth in a swimming pool is usually a sign that something needs attention. But does pool algae itself make people sick? Not always. Ordinary green algae is generally more …

Bubble Algae in Reef Tanks: How to Identify, Remove & Prevent It
Bubble algae is one of those reef-tank problems that can start with a single green bubble and slowly become difficult to deal with. At first, you may notice only one …

Yellow Pool Algae: How to Identify, Treat, and Prevent
A pool that looks dusty again soon after vacuuming may have more than ordinary dirt or pollen. Yellow or mustard-colored deposits on shaded walls, steps, and pool floors can be …