- Joined
- May 19, 2004
I've read about people using highlighter pens. They'd just drop the ink tube into the water for a few hours.
I'm not sure if this will make the water a nice blue or how long it will last, but it is supposed to show up nicely under uv lights.
Highlighter ink may not be so good for your system or tubing, though.
http://www.ocforums.com/showthread.php?t=322171
I'm not sure if this will make the water a nice blue or how long it will last, but it is supposed to show up nicely under uv lights.
Highlighter ink may not be so good for your system or tubing, though.
Perhaps not the deepest prettiest blue out there, but mine isn't so bad.JoT said:Anti-freeze, when diluted with water, creates a very pale and thin color.
http://www.ocforums.com/showthread.php?t=322171