Heater in filter compartment?
I have the 4G Fluval View as my desktop tank at work with a betta in it. I have a small 25W adjustable heater in the filter compartment - it's kind of a trap-door behind the tank basically where the water circulates from the bottom of the tank and then kind of waterfalls out the top. It has been keeping the water at a great, steady temperature. Someone randomly asked me if it was "ok" to keep the heater in there and I was like yeah sure why not? But now doubt is eating at me. I can't imagine any reason why it wouldn't be good to have it in there, can you? It gets the most possible water circulation in there. It's not pressing against the acrylic of the tank at all - the suction cups hold it in place. I think it's just fine? It has been working like that for a month.