WOW, i have 3 tanks and i have been in this crazy fish world for a year and none of my fish tanks are that good. People are saying its good for a big-in-r but its good for anyone. I love the natural look, i wanna redecorate my 10 gallon like that black stones, rockwork a few plants etc. It looks so good.
Even thought it's next to a filter, it may be better to have the heater at an angle, so the thermostat (at the top) doesn't get all the heat going to it and just switch off to early. But it is next to a filter...