HELP EMERGENCY!! Too much "Purple Up" added what to do?

[bao]

HELP please,

I'm a little freaked out right now. I was dosing my tank with purple up and well the bottle is 3/4 gone and at the bottom the calcium build up was pretty thick.

So i shook up the bottle really good and poured some into my tank, but accidently went overboard and poured too much in. I think i poured about 15-20 ml into my 100gal + 25 gal sump. The tank got really cloudy and now i'm afraid this might have an adverse affect on my corrals and fish. Should i do a water change now? or just wait it out.

I have a lot of expensive corals and fish and don't want to lose them over night. It's 1:30am so i need help fast!!!

Thanks in advance

Bao