What I think now is this:
As stupid as he is, what will me telling him how stupid he is gonna really do?
He is probably not going to understand what I will say anyways as his cognitive capabilities are blurred by belief and stupidity.
I apreciate the advice and kind words, we are moving out ASAP.
The real problem is still that he leaves doors unlocked, the tank collapse is horrible but is not a threat to anyone's safety.
A heavily planted shrimp tank is possible!