The Planted Tank Forum - View Single Post - Convert Lux meter to PAR meter?
View Single Post
post #43 of (permalink) Old 06-21-2012, 06:38 PM
plantbrain
Planted Tank Guru
 
plantbrain's Avatar
 
Join Date: Dec 2003
Location: The swamp
Posts: 13,609
Quote:
Originally Posted by Hoppy View Post


This shows the dot marked "cathode". Is that the positive side?
Cations are + eg K+, Ca++ etc........metals.........good way to think about it for some.

Regards,
Tom Barr
plantbrain is offline  
 
 
For the best viewing experience please update your browser to Google Chrome