Fluctuating temperatures actually benefit corals

[MitchM]

For those that are interested, here's another good article - (this one's free) - discussing the varying temperature and salinity conditions that our corals and invertebrates come from:

http://www.ronshimek.com/salinity_temperature.html

Mitch

[BlueTang<3]

I saw a lady's tank who had no heater, the halides heated the tank i the day time and the tank would cool to in the high 60'sF in the winter at night. It was one of the nicest sps tanks i have ever seen.