FL!PPER DeepSee Aquarium Magnifier Magnetic Viewer – Fish Tank Magnifying Glass – Magnetic Magnifying Glass Ideal for Photography – Flipper Fish Tank Accessories, 4

It has a strong magnet. The only bad thing is it diesnt float. So be ready to grab the glass when removing from aquarium.

I have to say that this product is everything and more than what I had expected when I bought it. I absolutely love this looking glass as does my 5 yr old grand son. If you have a salt water aquarium, you need lots of tools to enjoy it with. This is a must, in my opinion!

My husband loves this!

Makes for a really cool experience especially for the kids and visitors.

I got the nano for my 20 gallon and so far I love it

Expensive but it works

Love it, no issues works as expected

Great magnifier- must have if you own a reef tank. Also keeps my glass clean.

All I have to make it a lot checking out corals

Great product for the Price!!!