I’m wanting to switch UVB lights, my little guy is in a 75 gallon tank and the light will be placed on top of the screen, his basking spot is 10-12 inches high I would say..should I get the 12% or 14% Arcadia bulb?
Get the 12%. I use the 14% in my 4x2x2's and am getting UVI levels near 5 and that's at a distance of 18-20 inches away. At 12, even with a screen, your UV levels will be unhealthy.
The only difference between the 12 and 14 is the effective distance of the bulb. The 14 was made for larger (taller) enclosures.
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!