Any aquarium water conditioners safe for loaches?

Starting an aquarium soon, and I'm interested in getting some kuhli loaches along with tetras, platies, etc. However, I know loaches are sensitive to any chemicals put in the tank, but I have to cycle the tank with treatments before I put anything in. Are there any cycling water conditioners that I can use that won't harm the loaches?

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lorelei

You don't need water treatments. Just cycle the tank with water and gravel from an established tank, if you can, or just with a filter running, and throw fish food in it to start the nitrogen cycle when it rots.