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Here's the link:
http://reefkeeping.com/issues/subject/chemistry.php
I think you would be better served to get more accurate test kits. I've been using the new Red Sea Coral Foundation Pro kits and checking them against my Salifert kits and they are very close. Once you have this kit, the...
Well, at least those who are seviced by those facilities will no longer have to use a chloramine specific filter in their RO/DI unit any longer.(After the change over)
I don't know that the cost would be worth it, but you could look into getting the impeller and housing to make it into a Water Blaster HY 1000. I'm not sure that you couldn't just get the impeller and try it, but the housing might be different too.
PS I have a couple of old AquaClear 70's that...