Q: When treating weeds and algae, why do I have to treat in sections?
Zahn- Cedar Rapids, IA
A: It’s all about the fish. Though it’s an inconvenience to you, treating your lake or pond’s weeds and algae in sections is critical for the health of your underwater inhabitants. Those herbicides and algaecides deplete the oxygen in the pond, creating a stressful environment for the fish. Partitioning the treatments keeps oxygen levels safe while minimizing the stress.
When combating weeds and algae in the summertime, remember these three things:
- Warm Weather = Less Oxygen: In the hot summer months, the water column will naturally hold less oxygen as it warms up.
- Chemical Treatments = Less Oxygen: When you treat the weeds and algae with Shoreline Defense® or Algae Defense®, the oxygen levels will decline in your pond.
- Decaying Matter = Less Oxygen:As the herbicide and algaecide start to work, the decaying matter will begin to be consumed by microorganisms, which use up the oxygen in the water.
All of these things create a stressful situation for your fish. When that happens, their immune systems could suffer, and they could develop and succumb to disease – which is something you don’t want to happen.
So while treating your pond or lake, break it into quarter sections. Then treat one section and wait 10 to 14 days to allow the water time to rebalance its oxygen level before treating the next section. Some other things you can do to improve the oxygen levels in your pond:
- Add Aeration: Aeration, like the Pond Series™ Aeration Systems, adds oxygen to the water below the surface. The oxygen is utilized by the fish as well as the beneficial bacteria and microorganisms, which break down the muck and detritus that feed the algae and weeds.
- Rake Away the Debris: As the herbicide and algaecide go to work killing the pond pests, take time to rake out the dead debris before it becomes algae- and weed-feeding pond muck. The Pond & Beach Rake makes the chore quick and easy.
Pond Talk: What kinds of spring and summer maintenance chores have you been doing so far this year?
Filed under: Aeration, Algae Defense, Cattails, Chara (Algae), Emergent Weeds, Fish, Fish Kill, Pond & Lake, Pondweeds Tagged: | Aeration, algae defense, Algaecide, chemicals, fish kill, herbicide, shoreline defense, spray, treat