Please Help!!!!!!!!

[Ken Ziggy]

My Heater in my sump actually exploded and burned.It was a brand new one I just bought.I forget the name.I'm really bummed out.All my fish exept my watchman goby died and he isn't doing very well.I emptied the sump and cleaned all the broken glass out and changed the water in the sump.I put three layers of polyfilters in and activated carbon.I only had a 5 gallon bucket of fresh saltwater to do a water change on my 75 gallon reeftank.I'm mixing as much as I can as fast as my ro/di unit can kep up with.How long really do I have to wait before I can use the new mix.I know they say 24 hours but this is an emergency.The bag actually says emediately.Can I do this in this situation.My skimmer is on full tilk also.I have lots of corals and 150 pounds of live rock I need to save.Anyone with any suggestion's please help me.I don't know if I should get any other chemical filter like chemi-pure or not?Dumby me I didn't have a ground probe on the tank either.But I'm running out to get one now.I feel like I just let my tank down.I feel bad enough whats going on with what happened in new york and the pentegon.Now I feel down right deppressed.If anyone can help please respond asap.Thanks Ken.My email is [EMAIL PROTECTED]   if you need it.