My local fish store tells me I should change my CF bulbs every sixs monthe. It that correct? Brian
bas12547 Member Mar 20, 2005 #1 My local fish store tells me I should change my CF bulbs every sixs monthe. It that correct? Brian
reefnut Active Member Mar 20, 2005 #2 Opinions very but between 6-12 months. I change mine every 12 months.