ok, i've used purple up now for 3 years none stop, as you see I'm a serious reefer,lol, and because i focused more on SPS in the last 4 years, I've learned to just keep thing's simple as because i have too many tanks to have reactors and such, so i use only B-ionic 1 and 2 part, and purple up, hand dose daily, Purple up has mag,cal, stromtium,and carbonate.
So I test daily, each reef tank with salifert test kits, i have them all but only use cal,alk,and mag, weekly i check all other levels, i do water changes weekly 15% , so because i have such a large level of SPS collection, i go through tons of b-ionic,esv mag,and purple up, YES I KNOW THATS COSTLY, BUT I LIKE THE PRODUCTS, AND SO DO MY CORALS.
Now i got to say i am a purple up freak, i get them by the gallons, its better than paying like 20.00 a bottle, but i love coraline algae in my reef tanks,glass,rocks,etc.i have done my own experiments and got to say that purple up does accelerate and spreads faster,thicker, out of control, some people like it some don't.
yes it raises cal levels but i balance it all out, and i still half to add mag, my corals suck it up fast.
280 gallon
144 gallon half circle
175 gallon bowfront
within 30 to 40 minutes, its clear, some of my smaller reefs takes sometimes 1 to 2 hours as the calcium levels deplete(sucked up) slower.