Hey I have 4 minnows(from a river by my house) and I'm wanting to add them to my tank with my 2 ACFs and my BP cichlid. How to I go about doing this? Is this dangerous to my current fish? Do the minnows have diseases that could spread to my other fish? If so how do I treat those diseases for the minnows? ***I've been doing daily 100% water changes with my minnows hoping to rid them of diseases.