Sam, I think they are both manufactured in the same plant.

Sam I switched to kent a few months ago and to the tank and corals it made no diffrence. I now use kent because it's the same price here as IO and I find it mixes with a higher Alk and Calcium readings so it's not lowering my tank levels when I do a waterchange.

cheers

The readings of the clear water where 7.2 meg/l

Marty, or anyone who's affected by this, post on my thread in Reef Central.

http://reefcentral.com/forums/showth...17#post1857017

That would be a good way to have your voice heard because Aquarium Systems is watching that thread closely and we're trying to come to a consensus there as to how common of a problem this is.

You'll all have to send a sample to Bob Studt at Aquarium Systems... they'll compensate if they find it's the bad salt.