No I haven't tested the water yet but I have been doing two 50% pwc a day. I'm finally taking the 45 min drive to the pet store tomorrow. With work and kids I just haven't had a chance. I really wish the person at the pet store would have told me I needed these things! Or maybe I should have done more research. I love these fish and its killing me that their dying! This lil Guy is loosing his color and has a few lil spots on his tail. He's not active and his fins are drooping. No red gills though. The tank temp is 82°. What type of affordable test kit do you recommend? And since I'm at the pet store would it be a good idea to pick up salt and meds?