You shouldn't need to worry about bacteria, the FW
bacteria are different, and the fresh water would kill your SW
bacteria very quickly. The cloudy water could very well be a bacteria bloom, it's a new tank is it not? I don't think I've ever seen a FW
tank cycle that didn't get foggy at least a little bit. so adding in the aragonite probably just helped it a little with sediment, haha.
The biggest problem I see is that the PH
of the water is going to be around 7.0 I'm assuming, which is very low for the Aragonite. This is what is done in a calcium reactor to break this stuff down to add alk
and calc to the water. So I'm going to take a guess that the sand will break down over time and add lots of calcium and alk
to your water. As long as the FW
fish can handle this, you should be ok, but I'd talk to someone that has run a Calcium Reactor for awhile and see what this stuff turns into, haha...