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When I get one it will be a GSA (Grey Seas Aquatics) They have a website but it is under construction so you can't see much about them. He also builds skimmers.
How much calcium, in ppm, is your tank using each day that you think you need a ca reactor? They are really only needed in heavily stocked SPS tank with a high calcium demand. I just use the 2-Part solutions to maintain my ca/alk.
i have 7 sps and lps and softies, but doing the regular dosing it will do fine my corals are growing fine so i think ill be okay till i do an upgrade lol