Algae are naturally present in most lakes and ponds, but not all algae growth is harmless. Certain algae blooms — a large accumulation of algae — can negatively impact water quality, aquatic life, pets and people. Knowing how to spot harmful algae blooms (HABs) early is an essential step in protecting the health and balance of your lake or pond.
At Aquatic Environment Consultants (AEC), we’ve helped property owners and homeowner associations manage algae-related issues since 1987. Below, we outline what HABs look like, why they form and what to do if you suspect a problem.
What Is a Harmful Algae Bloom?
An HAB is an excessive algae growth that can disrupt the natural balance of a pond or lake. These blooms commonly occur in nutrient-rich water and warm conditions, especially during the summer months.
When algae populations grow out of control, they can:
- Reduce oxygen levels in the water.
- Release toxins that may affect fish, wildlife, pets and people.
- Create foul odors and unsightly surface conditions.
- Interfere with recreation and overall pond health.
Signs of Harmful Algae Blooms
Watch for the common warning signs of HABs below.
1. Visual Clues
Visual signs of HABs include:
- Surface scum
- Paint-like streaks
- Thick floating mats
- Cloudy or pea-soup-colored water
- Clumps collected along shorelines
2. Odor Changes
HABs can sometimes change the smell of your pond. Be cautious of:
- Strong, musty or sulfur-like smells.
- Odors that worsen during hot weather or calm conditions.
3. Effects on Aquatic Life
You may also notice changes in your pond’s aquatic life, like:
- Fish gasping at the surface
- Sudden fish deaths
- Reduced activity from aquatic organisms
The Reasons Harmful Algae Blooms Develop
Without proper management, certain conditions can allow algae populations to grow rapidly and overwhelm the ecosystem. These include:
- Excess nutrients from runoff
- Warm water temperatures
- Poor circulation or stagnant water
- Low oxygen levels in deeper areas
Why Harmful Algae Blooms Are a Concern
Unchecked HABs can create serious problems for both the water body and its surrounding environment. Potential impacts include:
- Declining water clarity and quality
- Stress on waterfowl and aquatic birds
- Increased odors and surface debris
- Disruption of the pond or lake’s natural balance
- Reduced oxygen levels
- Increased maintenance costs
- Unappealing appearance
How AEC Helps Manage Algae Issues
At AEC, we focus on long-term, environmentally responsible solutions, not quick fixes. Our experienced team evaluates each pond or lake individually to recommend the right combination of services. Our goal is to address visible algae and correct the underlying conditions that allow HABs to develop.
Our professional algae management strategies include:
- Manual algae removal
- Algaecides
- Nutrient management
- Aeration systems
- Aquatic plant adjustments
- Monitoring and maintenance
Partner With an Industry Leader
AEC has been a trusted leader in lake and pond management for decades. We work with homeowner associations, commercial properties, golf courses and residential clients who value healthy, well-maintained waterbodies.
Keep reading for additional inspiration and a wealth of information about our pond and lake services. Then, when you’re ready, take the next important step and request a consultation. We can make your lake or pond beautiful and healthy and keep it that way.