So, it means Dutch Synthetic Reefing.
You designed your own synthetic salt! You discovered and honed your own reef keeping methodology! You even brought a goniopora colony back from the dead (documented on RS) -just WOW!!
Lots of good info there... Says you're working on an English version of your calculator. Nice! How's that coming along my friend?
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I'm definitely reading up on it.... but for now I'm still going to try Tropic Marin All-For-Reef since it's supposed to be a single solution for maintaining alk, cal, mg, and trace elements. However, once I'm up and running in the new tank for a while I'll know better what the true cost is.
Thanks kindly for sharing, Glenn!
Blue