Hi there. I have a 50 litre fish tank, and have been using an Interpet Deltatherm heater at 100W, which states is for 45-90 litres. It has been great, worked very well. But have found these one fog up inside the glass. Obviously I don't trust that. I have had two now and they do the same thing, right from the first moment I put them in the water and turn them on. So, I wanted to change to using an Elite Submersible heater. However, their 50W one says it's for 50 litres. 100W for 100 litres etc. Do I stick with 100W as that's what I've been using with the Deltatherm one? Or should I follow Elite's instructions of 50W being the right one for my tank?
Thanks!
Thanks!