ISTA Saltwater HYDROMETE - aquarium fish tank reef Soft Coral Marine Supplies

Its working good if we know how to use it.Points to keep in mind1. Nake sure there r no water bubbles on the indicatorIf there is even a single air bubble on the indicator (which obviously will), it shows wrong value.So take little water and tilt left n right few times until the bubbles go off.2. After each testing, wash with ro water to clean n then dry it before packing it.3. Once in a while clean using vinegar water to remove any salt on the indicator.I have attached photos of testing done on same water with and without bubbles on indicator. I have shown the bubbles also in an image. Even a tiny bubble will make a huge impact in the result

Purchased this item to check the salinity for my marine aquarium, when the item arrived it first washed it with normal water at that point of time the salinity of the water was 0.31 and then after checking on the marine tank the salinity showed same. tried several times every time showed the same salinity range. After that i rinsed it with normal water and checked the salinity of normal water several times the salinity of the item always and every time showed 0.31. I quickly figured it out that the item is waste of time and money. Had to return for a refund. So before buying thing and avoid the brand.

it is showing 1.03 reading for raw water

Cannot be used for freshwater

This product is uselessIt is not showing proper reading everytime the reading goes above the level of 1.030

Useless product. Everytime it shows different readings. Very Confusing. Don't buy it

Price rubbish