After doing Bryopsis research, it seems tech m is the only solution. Just so I don't order too much (there are no lfs's in Charlotte worth going to) do you guys think the 16oz bottle is enough and which mg test kitshould I get? I don't need anything fancy, but I do have sps and inverts so I don't want the mg to get too far above the recommended 1700 level so I kill too much.