I use NSW here on Okinawa. I always try to collect from the incoming tide. I have no issues. If you analyze the water, you will find it is high in salinity...1.030, low in calcium....370-390 and I have always been way low in magnesium....1100. Everything else is as we consider "in range". I find it funny that some go out and collect the animals from the water, but then are afraid to use the same water in their aquariums. I figure that I am trying to replicate their natural environment and give them what they are used to. What better way than to use the water I collected them from?
Wow. Paul B using NY seawater. I have seen your tank going on 30+ years now so it must work. But, I don't think I would have ever gotten enough courage to use North Atlantic seawater from any place that close to New Jersey or the Hudson...LOL!
Thanks for the input.