My heater kit for the Biorb has arrived and well..it's massive! It'll just look silly in there, could anyone please recommend a smaller one that would be more suited to it please?
I have a 3 gall bowl which I have rigged up with a heater and filter for a betta. The round sides mean it's very difficult to get a heater to fit-they're usually too long. I did have the newattino one on this page, the plus model with thermostat, but I monitored it with a data logger and the temp was all over the place, from 20 right up to 34! It was second hand though, so I presume it was faulty. They're very small so should fit in your biorb.
I ended up with the hydor heater just below on that page, but it has no thermostat, it's just on all the time and raises the water temp by approx 2 degrees.
Is the kit you bought definitely for the baby one? Strange that it would be so big.