I ran out salt went out got red sea coral pro sea salt did a small water change went to work came home to the smell of low tide !! Tank all cloudy ! Well I've been keeping my alk at 9 for ever now I did not realize well never gave it a thought that the coral pro is a 12 alk when I did the changed the frogspawn must have taken a direct hit and well you get the rest had 4 mushrooms melt too I hate it when you work so hard on something and do something so stupid and mess it up !!