we left for our honeymoon, and the rents were in charge of the tank, they saw the fish looked sick and brought the water to get tested at the lfs
they told them it was perfect, the temp was also okay. they turned the lights on less to help with the hotter weather. the next day everything was dead
we got home today and there is white chalky stuff all over everything, including hte heater. the water is also all sandy and stirred up.
earlier a week before we left we had a fish get a weird crator looking hole coming out of his skin (it was new) so we were able to get a refund and they told us at the lfs
it wasn't contagous it was more like a cut.
any ideas, i don't want to put all the $ back into it if it was my fault
any help is greatly appreciated, it's pretty tragic.
thanks in advance