December 2025 - PondscapesAZ

🐟 How Cold Is Too Cold for Koi in Arizona?

by Ralph Biezad | Dec 8, 2025 | blog

The Short Answer: Colder Than You Think Koi are tougher than they look. While they prefer water between 65°F and 75°F, they can handle temperatures down into the mid-40s, as long as your pond stays oxygenated and clean. In Arizona, it’s rare for ponds to get that...

What Happens to Your Pond Bacteria in Cold Weather (And Why It Matters)

by Ralph Biezad | Dec 2, 2025 | blog, Pond Care

The Unsung Heroes of Your Pond When you look at your pond, you see fish, rocks, and plants, but what you don’t see are the millions of microscopic heroes keeping it all in balance: beneficial bacteria. These tiny organisms quietly break down waste, convert ammonia...

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🐟 How Cold Is Too Cold for Koi in Arizona?

What Happens to Your Pond Bacteria in Cold Weather (And Why It Matters)

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