Review on Bubblefin ATC Salinity Refractometer Scale by Josh Whitehead

This is a must have item for marine aquarium owners. As a new hobbyist, I didn't know how often I was going to check the salinity, so I looked at these plastic readers. But now I find myself checking it CONSTANTLY. From the display tank, to the fish I just bought, to the coral I just bought, to the saltwater I just mixed, to the quarantine tank that I need to change the water in, etc. I ALWAYS check the salinity . I'm at the point where I'll probably buy a second one, so I have one in every room. Calibration was quick and easy. I've already found out how various local fish shops conserve their water compared to the salt water they sell. I have absolutely nothing to complain about with this item. contains a TON of water and you only need a few drops at a time. This isn't really a complaint, more of a warning to new users just learning how to do it. Good product.