Coral Life for over ten years. Reasonable price and lower alk( around 9dkh ) than RC or IO.
IO Reef Crystals, though I'll probably switch now that I can't seem to find it online anymore.
https://www.amazon.com/Instant-Ocea...&sr=8-1&keywords=reef+crystals+200+gallon+mix
http://www.ebay.com/itm/Instant-Oce...598502&hash=item3aa20e0b24:g:yyAAAOSw8d9U1eCE
http://www.drsfostersmith.com/produ...0PsmmF7JAJ8sO7_Lh3Md3xMtNpkjePopPoaAtad8P8HAQ
https://www.bigalspets.com/instant-..._81BGPi3AOeSmYKumLb_qRz-XJT-gAqgaAqXfEALw_wcB
Need more choices?
Hah, of course as soon as I point out that I was having trouble last week everwhere is back in stock :lmao:
i have switched to the fritz salt and so far really like it