Piggy
Reef enthusiast
I've never had this problem before. My tank has been having temp swings anywhere from as low as 74 and now high 81. I have two heaters. So what I did was when it was running cold I took one of them out of the sump and put in MT. Well that didn't work so well. Was no change. So I took that heater out and put it in a bucket of water to see if it works. Well it only works if you turn it Way up. I only had this heater since summer. It's one of them stealth ones. So I dug out my Theo heater the one I use to warm up my water change water. It works but to well it doesn't shut off when temp is reached. I put in two thermometers to double check temp. They have to be right because the water is very warm to the touch. I can tell some of my corals don't like the temp change. I need to figure this out before I lose them. So what are good heaters. At this point money is not a issue seeing it would cost lots more to replace my corals.