Posted: Thu Jan 01, 2015 12:36 pm Re: Exo Terra Sunray
I'd say 9 months for the MegaRay. I got my first one back in October 2013. I think I replaced it this summer, when it was down to around 40 micro watts per cm2. That's still stronger than the PowerSun was brand new.
I don't remember the numbers when I last measured about three weeks ago, but they were still good.
There's no question that I could of kept using it, but after watching the local RES basking at high noon in the summer, I've come to the belief that the uvb recommendations for RES are on the low side.
Tobi a RES born in 2012
1 dog, 1 teenager, 3 aquariums filled with fish, snails, shrimp and a bit of algae