I use the PowerSun 100 Watt, and my Viv is 47L x 22W x 19H and it keep's it heated pretty well and the Basking Spot is perfect, a 160 Watt seem's like it would be WAY to hot for my Viv or a Viv smaller than Mine.
I just set Swordtail's timer for his bath and paused it so I could actually fill his soaking bowl up and he crawled over my phone and canceled the timer
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!