does CFL light position matter? - The Planted Tank Forum
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post #1 of 3 (permalink) Old 04-06-2006, 09:58 AM Thread Starter
Algae Grower
Join Date: Feb 2006
Location: Philippines
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does CFL light position matter?

Hi guys, i was havign a coversation with my friend and he told me that the position of the CFL light can greatly affect the growth of plants.

he said that setting the CFL horizontally has better effect than having it vertically. considering both have reflectors around the light.
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post #2 of 3 (permalink) Old 04-06-2006, 02:34 PM
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if you mount it horizontally it will make your plants grow sideways.

not really the light emitted will be the same no matter if its upside down horizontal or vertical . I belive your friend means the plants will be exposed to more light if the bulb is mounted horizontally over them.

Eclipse system 12
heavily planted
AH 36w retro kit light 2pm-11pm
Substrate: Flourite
Pressurized Co2 with Red Sea 500 Reactor
jbj regulator

10g shrimp Only tank
Flourite Red
28w corallife aqualight
Various Mosses.
whisper 20 w/ sponge pre-filter.
Feeding HBH Lobster crab bites and Algae Wafers.
No Co2 and very light fertilization
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post #3 of 3 (permalink) Old 04-06-2006, 05:59 PM
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There are some compact screw in bulbs that are mushroom shaped, with a large diameter. Those are made to be vertical above the surface to be lighted. The ones made for household fixtures are usually more cylindrical, and look like they have less restrike if mounted horizontally.

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