OMG I never realized what I was missing!!! I ordered the 5 inch. As you can see in the picture I posted, the size of the 5 inch laying on a magazine to put it in perspective. The magnet is plenty strong to hold it in place, the magnification from the front of my tank to the back is perfect! The details I can see thru the flipper are astonishing. Im a 30 + year marine aquarium hobbyist and with the flipper Im seeing my corals, invertebrates and fish in a whole new light, not to mention all of the tinyist of life I have been missing but now can see. If you want to see your marine environment like its the first time ever, look at it thru a flipper magnifying lenz!! You wont be disappointed as the what is that? wow oh wow hunnie come look at this! and many other reactions begin to flow!!!

This is a great tool to check up on corals and other things in your aquariums. Glad I got it.

I wish have more zoom..but its good

Es muy fácil de usar y también es una excelente inversión .

I can spend hours viewing my shrimp tank and this magnifying glass takes it to a whole new level. It truly helped me appreciate these fascinating creatures more and made me notice things I hadn’t before.

Great product! Makes it so much more enjoyable to see all the coral close up. I won’t have forehead and nose prints on my tank ever again!

My husband loves this!

Got it for my boyfriends tank. He loves it. Its a large lens, easy to see through. The magnet is really strong so it doesnt slide around or separate easy. Its fun to look through. Going to order one for my tank as well.

If your a reefer you need this in yo life!

The magnification is very low unfortunately. It only makes things like 1.5x bigger. Bummed.