Jun 4, 2016 #1 J Jagator31 Active Member View Badges Joined Jan 6, 2016 Messages 133 Reaction score 49 Rating - 0% 0 0 0 How much?
Jun 7, 2016 #2 Fauna Marin Well-Known Member View Badges Gold Sponsor Joined Jul 13, 2012 Messages 603 Reaction score 211 Location Germany Rating - 0% 0 0 0 Anywhere between 50-100/gph for every 1 liter of Zeolight media is recommended.