Found a suspicious puddle of water on the desk next to my tank today. Naturally I panicked, but I stuck a towel next to the tank and after a few hours its still totally dry. So what happened? My theory is that my cat, who loves water, was having a bit of fun while I was doing errands today... Since the tank is open-top, he could have easily played in the water a bit. He has a bit of an obsession with the waterfall from the filter (funnily enough, he doesn't care about the fish one bit). But how do I tell? If I find water next to my tank in the morning, is it a leak, or was my cat fooling around again? I guess I'll just go to sleep and hope for the best... and hopefully the tank won't split along the seams during the night and dump 7 gallons on all my stuff.