While tangs love frozen food it is like giving candy to kids, as it is not really good for them. Algae is what they eat in the wild. Nori should be a good portion of their diet.
An ATS can be much more effective the a refugium, especially for the space required. I have a 3 sheet one in corporated into my overflow. It takes no addtional space and is easily tuned by changing the light schedule.
They usually are. His prices are the best around for decent sized healthy frags. You will mot go wrong buying from Mike. Gone before i even see his listings most of the time.
I have lots of Calcium Chloride available still.
50 pounds only $45.00 BRS is $199.99 for just 35 pounds.
3 pounds for $10. BRS wants $8.99 for enough to make one gallon of solution, Only about 1 1/4 cups of Calcium Chloride.