Reef Crystals. A friend of Acer and I uses RC but awhile back got a batch that mixed up with very low alkalinity and and he had some major tank issues and lost coral before figuring out what happened. Since then I have been thinking about switching myself.
+1 on Red Sea Coral Pro. Had major algae until I made the switch from Reef Crystals, corals were much happy also.I used red sea coral pro for 3 years with zero issues, it mixed so much faster (clear within 20 minutes) and cleaner than IO or RC. I recently switched over to the red sea blue bucket since I didn't see a need for the elevated Alk levels since I run a CaRX on my 180 and Kalk on my frag system. RSCP was nice to use when I dosed 2 part.
At what salinity and ca?
Kevin
what was the PH? My IO has lower Alk ( 7.2) and lower PH (7.8) than many other brands. Which is why I am thinking about changing.