The “Hard Water” Secret: Why Your Guppies Keep Dying (And How Crushed Coral Saves Them)
You buy 5 beautiful Guppies. You have a filter. You have plants. You feed them premium pellets. But within a week, their fins look clamped shut. They stay in one spot, shaking and wiggling but not moving forward. Then, they die. You test the water: Ammonia is 0. Nitrite is 0. You are confused. “My […]
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