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Discussion Starter · #1 ·
Hey there,

In a few weeks I'll be setting up a new 29-gallon. I'll be using Eco-Complete Aquarium Substrate which apparently includes some water containing "purifying bacteria" that help jump start the nitrogen cycle. I also wanted to use some established filter media to help the cycle along.

However, instructions warn that the bacteria water should only be used in new tanks. My 29-gallon is new, but I want to transfer some bacteria over from my old 10-gallon.

Can I use both? If I use unrinsed Eco-Complete will it throw off my burgeoning cycle? I think the method of old filter media is more reliable than dirt water, so I'd more readily rinse the substrate that throw out my filter media.
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