That is the saddest story I have ever heard!
I read about your tank even before I joined the forum, and have since wanted to convert my 10gal to a crayfish tank like yours... I happened to come across this thread again and what a pity...
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29gal, fluval 204, 75W VHO, DIY co2; RTS, SAE, Ottos, Neons, Cardinals, RNT