sorry for you loss. 
same almost happened to me. thought my lid was on tight, and my rope fish got out lucky for him my gf found him before our cats did and was put back in the tank. after that, i used tape on the lid, and its worked pretty good so far.
same almost happened to me. thought my lid was on tight, and my rope fish got out
lucky for him my gf found him before our cats did and was put back in the tank. after that, i used tape on the lid, and its worked pretty good so far.