Canon isnt gaining weight and Nikon is... we also witnessed Canon regurg her food today too :( I used a lid to a shoe box and was able to block the 55 gallon in half with one on each side. Canon went right up and started basking under her heat lamp which made me feel a little better.. now to see if she can start thriving, if she does then it looks like another 55gal is in our future, thankfully the stand allows for a tank on the bottom.