Why Fall Is a Smart Time to Treat Your Pond or Lake

As water temperatures begin to drop and biological activity slows, many pond and lake managers shift their focus to seasonal maintenance. Fall presents an opportunity to address nutrient levels before they become active in the following growing season.

During autumn, accumulated nutrients, including phosphorus, may still be present in the water column or sediment. Treating during this time can help reduce the amount of orthophosphate available for uptake in spring, when growth typically resumes. This approach may be especially useful in areas with recurring blooms, runoff exposure, or sediment-based nutrient cycling.

Algae Armor can be applied during the fall to support long-term nutrient management. Its mineral composition of iron oxides and zeolites binds with orthophosphate to form stable, insoluble particles. The silicate-based enhancement technology ensures the product remains effective across a wide pH range and variable water conditions, including cooler temperatures and suspended sediment.

Fall treatments may also contribute to improved water clarity heading into winter and reduce nutrient loading during snowmelt or rain events. For those incorporating Algae Armor into a seasonal program, fall is one of several key points in the treatment calendar. For help assessing application timing and dosing, please contact our support team here.