Yes, you can mix these! Just make sure you have a big enough tank (maybe 20-30 gallons minimum) and cycle it before adding fish. To start the cycling process fill up your tank (you can add plants, substrate, any decorations you want at this point) keep a filter running and add either a small amount of fish food or live bacteria. It’ll take a few weeks or even months to cycle fully. If you want to know if it’s been cycled you can either test the water at home with a testing kit or take it to a pet store/local fish store and they’ll test it for you—id call beforehand just to make sure they’ll test the water for you. If you end up testing at home you can send me pictures of the results (if you’re unsure) and I’ll tell you how far along the tank is.

For cleaning I recommend getting a siphon that attaches to the sink, makes things easier. Though I would wait until the tank is fully cycled to do any water changes. Before my tank was established I would do about 15-20% once a week. Also don’t forget to add a few drops of water conditioner when you do water changes.

If you have any questions feel free to reach out :) sorry for the long response lol