Gel Filter 10 Pack 2"X2" hat For the most accurate readings

For the most accurate readings you will want to calibrate the refractometer to the solution you will be reading

Violet 420nm

With a mostly white body

Just like a snowflake

a sleek rimless acrylic tank body with a seamless all-in-one component

Gel Filter 10 Pack 2"X2" hat For the most accurate readingsThis is the 2"x2" pack of 10 color correcting gel filters you can use to take better photos and videos of your reef aquarium! Some remove all that annoying blue from your camera's shots. Some can be used to enhance other colorations in your aquariums. I guarantee you will have a lot of fun seeing which ones work best on your aquarium and take better photos and videos that will make you look like a pro!