Aquarium Dude Posted July 17, 2006 Report Share Posted July 17, 2006 How many standard flourescent lights will I need for a 4 foot 18" deep tank Quote Link to comment Share on other sites More sharing options...
antwan Posted July 17, 2006 Report Share Posted July 17, 2006 It all really depends what type of plants and how many you want to keep. Quote Link to comment Share on other sites More sharing options...
DiverJohn Posted July 17, 2006 Report Share Posted July 17, 2006 What Antwan said But FYI... I run 6x30W T8's on a 1150x 500 x 500 tank. ( about 250L). If my tank was a wee bit longer i would probably run 6x36W (4foot) tubes. John Quote Link to comment Share on other sites More sharing options...
Caryl Posted July 17, 2006 Report Share Posted July 17, 2006 I have 2 4ft tanks, 1 18" and the other 16" (had to go find an old 3ft ruler :lol: ) deep. The 18" has 4 daylight (or bright white depending on brand) fluoros and the other has 2. I have never had trouble growing plants with these lights. Indeed, many here have benefitted as I am always having to trim them! Quote Link to comment Share on other sites More sharing options...
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