Flow Sights

[TheFishTeen]

Any idea where I could find flow sights that are plastic or made from other reef safe material? It should be threaded so I could Tee off a pipe and thread in the sight on the T.

mcmaster sells them but for one, Im not sure if they're reef safe and 2, they're expensive!

Any help would be high appreciated.

 

[redzone]

does it have to be hard plastic? im thinking you could use barb fittings and a piece of clear flexible tubing. i think what ever you use they would still gunk up on the inside?