So my 13 year old daughter decided to get herself a betta fish... It's in a small tank now but obviously it needs more room so I bought a used 10 gallon tank with the basic set up. I am utterly confused by the cycling process. I think I've read too many different guides and my brain is fried. Currently the tank is filled and has heater and filter running. I put a water conditioner in as directed, tested the PH levels (7) and have added a little fish food daily for the last few days. Before I head back to the store for more supplies I'd like to actually know what I'm talking about. Do I need to buy ammonia too in addition to the food and used gravel? I know I need something to check the ammonia levels too. I also added an ammonia neutralizer during initial set up. What do I do next? Forgive my ignorance but the fishy wasn't my idea! I purchased some of those moss ball plants too. The direction say to soak in a gallon of water with a teaspoon of salt. Is that safe for freshwater fish? Last question... Is it really ok to put certain fish in with a betta? I tried the mirror tip to see if it would react and flare but it didn't. I'm pretty sure it's a female (not certain but appears to have that identifying dot on belly). Last thing I want is a massacre so if I did add a few other fish, would it react immediately? Sorry for all the questions. Just want to get the little guy/gal in a more comfortable home. Thanks!