“But my nitrite is 1 ppm and I just added fish!” Whoa there, speed racer. If you added fish before the cycle finished, you’re in for a rough ride. Do a big water change (50%) ASAP, and add a product like Seachem Prime, which temporarily detoxifies nitrite. Your fish will survive, but you’ll learn your lesson—patience, young grasshopper.
“Why is my nitrite still 0.5 ppm after a month?” This usually means your filter is too small, or you’re overfeeding like you’re running a seafood buffet. Fish don’t need three-course meals—feed them once a day, and only what they can eat in 2 minutes. Leftover food rots and creates more ammonia, which leads to—you guessed it—more nitrite.
“Can I speed up the cycle?” Yes! Borrow some dirty filter media from a friend with a healthy tank. It’s like giving your tank a bacteria transplant—instant party. You can also use bottled bacteria (like Tetra SafeStart), but it’s less reliable than a friend’s hand-me-down goop.
