Controlling Algae in Surface Water with Algaecides

Mar 26, 2025

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Algae growth in ponds, lakes, and reservoirs can quickly spiral out of control, leading to murky water, unpleasant odors, and potential harm to aquatic ecosystems.

Effective Chemical for Algae: Algaecides

Fortunately, Water Solutions Unlimited offers a powerful solution—Mainstream 635 Algaecide—designed to effectively combat and prevent algae blooms in surface water.

Why Does Algae Form in Surface Water?

Algae thrive in water bodies due to a combination of nutrient availability, warm temperatures, and stagnant water conditions. Key contributors to algae overgrowth include:

  • Excess nutrients (phosphorus and nitrogen from fertilizers, runoff, and waste)
  • Warm temperatures, especially in late spring and summer
  • Sunlight exposure, promoting photosynthesis and rapid algae proliferation
  • Stagnant water, creating the perfect environment for blooms to thrive

If left untreated, algae blooms can lead to oxygen depletion, fish kills, foul odors, and even toxic cyanobacteria outbreaks.

The Best Time to Treat Surface Water for Algae Control

While algae can flourish in warmer months, the most effective times for algae treatment are fall and early spring. Here’s why:

  • Fall Treatment: Preventative application of Mainstream 635 in fall halts algae growth before winter dormancy, ensuring a clearer start for the next year.
  • Spring Treatment: Applying Mainstream 635 in early spring stops algae from establishing large colonies, reducing the risk of severe summer blooms.

Mainstream 635: The #1 Solution for Algae Control

Mainstream 635 Algaecide is a trusted, effective chemical treatment specifically designed to control and prevent algae blooms in surface water systems. It works by:

  • Breaking down existing algae, eliminating green film and floating masses
  • Preventing regrowth with a long-lasting formula
  • Ensuring safety for aquatic life when applied correctly
  • Providing a cost-effective, easy-to-use solution for municipal, industrial, and recreational water bodies

Before & After: The Power of Algaecides

Many clients have experienced the dramatic difference algaecides make in their water management efforts.

Before: A municipal pond covered in thick, green algae, reducing water clarity and affecting local wildlife. 

After: Within weeks of applying our algaecide chemical solution, the water became clearer, and aquatic life thrived again.

Preventing Algae Growth: Expert Tips for 2025

Beyond using Mainstream 635, long-term algae control requires a proactive approach:

  1. Reduce Nutrient Runoff – Minimize fertilizer use near water bodies and manage stormwater runoff.
  2. Increase Aeration – Installing fountains or aerators promotes water circulation and reduces stagnation.
  3. Monitor Water Quality – Regular testing for nutrient levels and pH balance can prevent surprise blooms.
  4. Apply Algaecide Preventatively – Don’t wait until algae takes over; use Mainstream 635 at the first sign of growth.

Take Action: Stop Algae Before It Spreads

Don’t let algae ruin your pond, lake, or reservoir this year. Get ahead of the problem with Mainstream 635 Algaecide.

🔗 Order Mainstream 635 today and keep your water clean and clear year-round!

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