I know this topic has come up before, but I'm looking for a SMALL adjustable heater for my 5 gallon.
I currently have the Tetra 50w preset heater, which I love because it's only about 5 inches long. It has been keeping my tank at a constant 76F, but I'd like it to be 78-80F, and I've heard that adjustable heaters are the way to go. Unfortunately, every 50w heater that is adjustable that I've come across is between 10-12 inches long and I really just have no idea how I'd get it to fit in my tank! The ViaAqua 50w is the smallest one I've been able to find, at about 8 inches but that still just seems too long to me. Anyone have other suggestions?