The Planted Tank Forum - View Single Post - Convert Lux meter to PAR meter?
View Single Post
Old 06-18-2012, 09:42 PM   #37
Planted Tank Guru
DarkCobra's Avatar
PTrader: (5/100%)
Join Date: Jun 2004
Location: Baton Rouge, LA
Posts: 3,349

Even if you can't find the dot, you can still identify the cathode by putting a voltmeter on it. The bare photodiode (with no filters) from mine produced 0.235V in room lighting during last night's test.
DarkCobra is offline   Reply With Quote