This is something I wish I had posted sooner. I am sure that there are a lot of of people aware of this but some new people may not be. Yeaers ago I purchased a heater made by Fluval. I found out purely by accident not the bad kind that it is not meant to be submersed PARDON ME!. I hope the so called engineer is drawing up pencil design with a pencil. Please be aware of the pitfalls of some equipment especially stuff made in shall we say other countries. I was a member of the health and Safety commitee when I was still working, and the total disregard for safety by This paticular Country was asstounding. The company rep printed off warnings from the Electrical Safety Board and things like forging UL stickers were not uncommon. The results were fire injury, and death. You are now aware