About 5 minutes before i wrote this post,one shitty things happen to my cribs. A plastic aquarium just fell because of my clumsily.I put the aquarium on another 2 feet glass aquarium and forgot to put the plastic aquarium back to where it belongs. The 2 feet glass aquarium did not support the weight of the plastic aquarium so it crack and boom the the 2 feet glass aquarium crack.Shit! i have to replace another new glass aquarium. Lucky me the plastic aquarium and my betta fish community in that plastic aquarium was ok.