The heater in my Solana malfunctioned and my water got up to 94!!!! Luckily i really didn't have too much stuff in there and lost a minimal amount for this reminder. For all of those that do not have a controller on your tank... go get one yesterday! One of the biggest safeguards in this hobby is redundancy, if i had a controller on this tank it would have been programmed to shutoff the heater regardless of what the heater wanted to do! I have an apex on my 125 and will be investing in an apex jr for my solana before I put anything serious in there again.