Thanks. Looks like I'd need 80 watts of heater to bring the temp up 10 degrees in my 20 gallon tank. Or two 40 watt heaters. But I'm finding that 50 watts are the smallest size heaters out there. Would I be asking for trouble if I put in two 50 watt heaters? I'm definitely going with submersible since they'll be in my sump. Any recommended brands? I've heard good things about Finnex...
_________
20 High (started 5/18/06)
20 lbs live rock and 3" sand bed - Remora w/ MJ1200 & Prefilter - 10 gallon sump/fuge - MAG7 & SCWD return - 65W 10,000K PC - 15W Actinic - Red-legged Hermits - Cerith Snails - Nassarius Snails - Royal Gramma - 6line Wrasse - Maroon Clown - Wheeler's Goby - Bubble-Tip Anemone - Green Star Polyp - Button Polyps - Frilly Brown Mushroom - Green Bullseye Mushroom - Kenya Tree Coral |