The Planted Tank Forum - View Single Post - Glass top+raised light?
View Single Post
Old 01-30-2013, 01:50 PM   #5
scapegoat
Planted Tank Guru
 
scapegoat's Avatar
 
PTrader: (13/100%)
Join Date: Jun 2010
Location: philadelphia, pa
Posts: 2,097
Default

If i remember, the glass tops pretty much halve the PAR value by the time it gets to the substrate.
__________________
scapegoat is offline   Reply With Quote