Blue Thumb Spring & Fall Clean
Spring & Fall Clean Cold Water Bacteria
Maintain a healthy pond ecosystem during colder months with this specialized cold-water bacteria formula. Accelerates decomposition of leaves, twigs, muck, and sediment when temperatures drop, while replenishing beneficial bacteria lost over winter.
Available Sizes
- PB2804 – 6 packets, treats 6,000 gallons
- PB2811 – 12 packets, treats 12,000 gallons
- PB2828 – 24 packets, treats 24,000 gallons
Key Features
- Cold Water Formula – Natural bacteria for temperatures below 55°F
- Accelerated Decomposition – Breaks down leaves, twigs, muck, and organic sediment
- Easy Application – Water-soluble packets for hassle-free treatment
- Dual Season Use – Fall cleanup and spring bacteria replenishment
- Completely Safe – Fish, plant, bird, and pet-friendly
Application: Apply once per week when water temperature drops below 55°F.
Calculate Pond Size: Length x Width x Average Depth x 7.5 = Gallons
Frequently Asked Questions
Q: When should I start using this?
A: Begin weekly applications when water temperature drops below 55°F in fall. Resume in early spring when ice melts to replenish bacteria.
Q: Can I use this with regular summer bacteria?
A: Yes, transition from warm-water bacteria as temperatures drop. Standard bacteria become less effective below 55°F.
Q: Is this safe for fish during winter?
A: Completely safe for fish, plants, birds, and pets. Helps maintain water quality when biological filtration slows.
Q: How do I apply the packets?
A: Toss the water-soluble packet into your pond near the waterfall or circulation area. It dissolves and distributes bacteria throughout the system.
Q: Will this prevent spring algae blooms?
A: By breaking down organic debris over winter and replenishing bacteria in spring, this helps reduce nutrient loads that fuel algae growth.