I dont think adding water from another tank does anything. In fact, it could be worse. Adding filter media from an established tank does help though
JPlikewoah;2682077; said:Before doing ANYTHING, I'd google "aquarium cycling" and educate yourself about the number 1 basic about fish keeping. Well......I honestly think everyone should know the basics before you can keep ANY kind of fish. 10 mins. of reading/educating yourself could save your current/future fish's lives.
JP