Jun 28, 2014 #1 hammadkatiyar Active Member View Badges Joined Feb 23, 2012 Messages 127 Reaction score 1 Location Dubai Rating - 0% 0 0 0 I have fowlr tank pls advise when should I change my lights?
Jun 28, 2014 #2 Reefing Madness Carbon Doser View Badges Staff member Super Moderator Excellence Award Hospitality Award Joined Oct 27, 2012 Messages 19,879 Reaction score 7,115 Location Peoria, AZ. Rating - 0% 0 0 0 every 9 months. If you don't the spectrum shifts and you end up with algae growth.
