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Unread 04/21/2017, 08:32 AM   #14
jda
Dogmatic Dinosaur
 
Join Date: Feb 2004
Location: Boulder, CO
Posts: 6,256
I thought that this was going to be another post for a 5,500 CFL screw in bulb in a clamp-on fixture. These last for years, cost a few bucks and years and fill the tank with macro.

I have always found that water changes to keep your iron up, or supplementing iron, was significantly more effective at growing macro than any light.


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