I grow mine in 1.007-1.010 salinity with nothing but an air pump and phyto.. Then strain half of my 5 gallon bucket every week and use the other half to repopulate. Same goes for my rotifers. (Edit)
Oh boy, so I realized yesterday as I was harvesting brine and rotifers that I keep my salinity at 1.017-1.020! I was blanking out when I replied last week.
You know what... I don't know what it is lol. It's a cylinder that is about 4 or 5 inches long with a 5 inch diameter. It is a very fine silk screen that has been pulled taught and glued in place. I got it from a friend.
That projects on hold. Im out of tanks right now. Once my buddy picks up his clean up crew then ill have an empty 10 gallon and ill start it. My other 2 tanks are having repairs also. So many projects