Originally Posted by mdrmo86
Lol thank you um I do not have a test kit I do need one tho an I've had the tank sit for bout 6 to 10 weeks an water chang every 2
May I suggest you get one so you can keep an eye on your parameters. The API freshwater master test kit is good and fairly value for money. I'm assuming you have a dechloinator? I would do a water change now just to make sure. Unfortuately your tank is severely over stocked by the size of the fish at their adult size. I don't know anything about the types of fish you have other than what I have just read up on and it seems they can get quite large and the silver tips are brackish. I'm guessing thats why you are asking about adding salt.
I'm sorry I can't be of any more help but I'm sure someone will come along soon who knows about the care of silver tips.