Alright, good to know... I guess I'll look for some pics of cyano and try to determine if that's what it was. I'll just have to get used to stuff spontaneously appearing and disappearing in my tank...
Soon I shall truly be neurotic... 'What's that in my tank?'... The next day 'Oh, no worry, it's gone.'... Then, 'OMG a crab!'
Should be an interesting summer
