I was just doing 100% water changes for my fish. I was taking Merlin's 3 gallon acrylic tank (thankfully emptied of its contents) downstairs for a quick rinse. I stumbled down a step and Merlin's tank went flying out of my hands. With a big thwack, it landed at the bottom of the stairs. I went to retrieve it, and discovered that it had an enormous crack down the length of it. Uh oh.
I scrambled down to the basement and frantically searched through my spare fish stuff until I found a 2 gallon critter keeper. I ran upstairs to where I had set Merlin's heater, and placed it in the tank to see if it would fit. Thankfully it will, but it's a tight squeeze.
The heater is made for a 5-10 gallon aquarium, but can I still use it in this tank? I need to know ASAP because I don't want little Merlin to get chilled.