Backyard Aquaponics
A place to discuss aquaponics

Just wondering if anyone has built an inverted periscope to look at their fish?

I tried it.. but couldn't get the submarine to stay suspended...

Man that's a good one Rupe! Should put it in the Jokes Thread! An upside down submarine!

I reckon it would be cool for kids especially to look at the fish.

Good idea with the periscope Mac

I remember someone here making a fish viewer with a domed clear plastic that sat on top of the water. A periscope would be even cooler.

http://www.koiphen.com/forums/showthrea ... ter-Viewer

cheers

Wouldnt you still get the refraction? (doesnt know)
Just thinking seen as periscopes arent actually meant to look "through" water.

Thanks SolTun and Charlie

Yavimaya - Yes I was thinking the same thing so I thought maybe if you put a piece of glass over the part that will be submerged it would work?

Then it's like having goggles under water but there is a periscope so that you can be out of the water? I dunno - any physics experts?

Edit: I think it would work if the mirror that is below the water line is water proofed behind glass. If the water can enter the periscope then refraction would occur and the periscope would no longer function as it is intended.

Edit 2: Actually refraction would still occur with the water proofing but it would not render the periscope useless. Instead it would just be like looking through water from the surface only the water proofed periscope enables one to look at the fish from a point of view below the water line. Kind of like from the point of view of a fish.

(I think)

Stick a couple lights on the outside of the periscope and you can then look at the fish at night as well.

Here's your answer... complete with instructions...

http://www.instructables.com/id/The-Sha ... /?ALLSTEPS

you could wear a snorkel upside down and dunk your head in....

Cheers Rupe! That's a good build.

Gonna have to get some of these as suggested in Stuart's thread:

viewtopic.php?f=2&t=15376

You wont need a periscope to see them...

Luckily the pipe configuration for a periscope is not as complicated as this Rupe!

Oi... leave my plumbing diagram out of this...