The worst I've had is Visitherm heater boiling my S. daemon and juruparis, was well gutted, and lost a tnak of communty fish to yet another Visitherm, needless to say I haven't had a Visitherm for a number of years now

Also lost my female salvini that I travelled to London for, she and a bif twice her size decided to do battle (had lived together for over a year with no probs), lasted hours with both fish keeling over at the end of it

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