Replacing incandescent bulbs with fluorescent

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charitystripe

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I wanted to replace my 2 Incandescent bulbs with fluorescent bulbs in my Aqeuon 10 gallon. I don't know how many watts the current incandescent ones are, but I wanted to replace them with the aqeuon mini compact fluorescent 10w 50/50 bulbs. Is 10w too little, since i have a java fern and anubia?
 

Matt B

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I didn't see a color temperature on the ones you linked, but I use 2 of the 13w version of these:
In a 15 gallon with low light plants (hornwort, java fern and a very slow growing stalk of cabomba) and they do great, no algae. So I think the 10w version will do well for you.
 
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JoannaB

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You are getting two bulbs with 10 watt each right? So that's a total of 20 watts in a 10 gallon tank that is plenty. You will even be able to grow plants that require more light then those I think. I did the same upgrade in my Aqueon 10, but actually found that it was too bright for a quarantine tank IMHO, so I just used one of the two bulbs and am keeping the other part of the fixture empty. As a result it looks significantly darker in one part of the tank, but I think it looks ok, and I was worried that too bright might be a bit too stressful for the fish in quarantine. I really liked the difference in light - the incandescent light was too yellow and in my opinion ugly, and was inadequate for photo taking. Enjoy your new lights!
 

QQQUUUUAADDD

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The only thing is, 1/2 is daylight and the other 1/2 is actinic. The actinic shouldn't do anything besides grow algae. I'd go with the bulb Matt linked. I have one over my 5 and it works very well.
 

jetajockey

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If it grows algae it grows plants. Actinics aren't good because they stick in the blue part of the spectrum but they do help to grow plants. Definitely go with something full spectrum/daylight.

Here's a cool writeup I found on the subject.
Note 420nm is around actinic range.

From
Light and photosynthesis.

Chlorophyll does not absorb all the wavelengths of visible light equally. Chlorophyll a, the most important light-absorbing pigment in plants, does not absorb light in the green part of the spectrum. Light in this range of wavelengths is reflected. This is the reason why chlorophyll is green and also why plants (which contain a lot of chlorophyll) are also green. Note in the graph above that the absorption of light by chlorophyll a is at a maximum at two points on the graph 430 and 662 nm. The rate of photosynthesis at the different wavelengths of visible light also show two peaks which roughly correspond to the absorption peaks of chlorophyll a. Plants do not depend only on chlorophyll a in their light harvesting machinery but also have other pigments (accessory pigments) which absorb light of different wavelengths.
 
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