i have a few tropical community tanks that ive had running for a couple of years now, they have been fine. then all of a sudden i did a water change and lost 10 fish, most the next day and others gradually over the week. i thought it was a one off, until i did another water change more died. on my most reent water change i lost 15 fish, all healthy some of which i'd even bred. my lfs ( a very good one their advice has never lead me astray before) told me that it was the tap water and they are losing fish too. anyone elso from melbourne's s/e suburbs had this problem
?
