Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT - Dual Scale (1.0 to 1.070 S.G.) - Automatic Temperature Compensation

This is an absolute must-have for saltwater aquarium owners. As a new hobbyist, I didn't know how often I'd be checking salinity so I was looking at those plastic readers. But now I'm realizing that I check 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 I need to water change, etc. I check salinity CONSTANTLY. I'm at the point where I'm probably going to buy a second one of these so I have one in each room. Calibration was quick and easy. I've already learned how different the local fish stores keep their water versus even the saltwater they sell.I have no complaints with this item at all...if anything my complaint would be that the eyedropper that is included to pick up your water sample, holds a TON of water and you only need a couple drops at a time. That's not really a complaint, more of a heads up to new users just learning how to do this.Great product.

100% Confiable

Wish I could get the viewer to be clearer. I use readers, so not very strong corrective lenses, but very hard to,read the scale. Also need to view in extremely bright light. If I had to do over, probably wouldn't buy them

Pretty easy to calibrate and use. Instructions and you tube videos helped. Great value for a small price.

Works!

Works well, my only complaint would be that it is somewhat difficult to read. Make sure that you have excellent overhead lighting when you are reading and you should be okay.

Works well so far.

I've never used one of these, but it makes things very easy and quick. I also purchase a hydrometer. In comparison, the refractometer is way more accurate and they send it in a nice container with foam protection and a dropper.