My first ball of Chaetomorpha has fairly thick wirey strands kinda like a plastic brillo pad kind of feel, the second ball feels more like a bunch of hair someone yanked out of the tub drain. Both are doing well at around sg of 1.012.
Both have a lovely green color, too!
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That's great news. The Chaeto I yanked from my refugium kicked the bucket after two days in 1.012.
One variety I have does okay in 1.012 but apparently doesn't like this Red Sea salt stuff I'm using for this tank. Rather, I think it enjoys all the goodies in DD H2Ocean Magnesium Pro Plus more than the cheap goodies in what I'm using.
Have been toying with some different types of Caulerpa and other macros that I've got to see what does well in brackish water. Have some really cool stuff in my refugium in my office that I need to cut up and bring home to try.