Betta Fish: Can I use my filtered shower head for tank water?

This is my thriving betta named Jin (like the Tekken character if any of yall know what that is lmao) and I’ve had him for about a year now. Ever since starting his tank I’ve always just bought the Top Fin pre conditioned aquarium water jugs because it’s genuinely just a lot easier for water changes, and aside from having to add some solutions or ammonia reducers once in a while it’s really easy to keep the parameters all good. I also have a separate snail/shrimp tank and once in a while i’ll put a few skrimp friends in with him as a lil cleanup crew but he literally hunts them for sport lmao. ANYWAYS my point is I was just thinking about how I have a filtered shower head for the sole purpose of filtering out hard water and chlorine-which are the main reasons why tap water is unsafe for aquariums, right?? I was just genuinely curious if that would work as tank water without having to do a long cycle process like you would with tap water. Or if anyone knows if that’s like a huge no go for some reason. Perhaps I could just use my testing kits on the water that comes out of it when I shower and see but I wanted to post this in case anyone else thought of that. Pls don’t come at me if that’s a dumb question/don’t come for my tank I have more plants coming in the mail next week🧍🏻‍♀️im sensitive