ESV 2 part alternative

[g0rilla]

Have been using ESV 2 part for years with great success

Prices have gone up locally because of the very strong USD

can anyone recommend a good alternatives?
something they are using or are happy using on their sps dominated tank?

calcium reactor not an option on the tank.

 

[SeargentSlice]

http://reefkeeping.com/issues/2006-02/rhf/index.php

 

[Pife]

I use brs and mix it.