Compact Flourescent Bulbs

Lotus

Ultimate Fish
Moderator
Aug 26, 2003
15,115
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Southern California
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#2
It will depend on what kinds of plants you want to grow. Some require more light than others.

With the 5g, you will need more wpg to get the necessary growth. I would count 10 watts as low light. Maybe go for 15 or 20 watts if you want a higher light tank, if it's physically possible (depending on dimensions of tank etc.).

For the 20 and 30 gallon tanks, I would aim for 2.5 to 3 wpg. So, around 50 or 60 watts on the 20g and 90 to 1110 watts on the 35g tank.

You can go for less if you want low-light plants, or have one as a low, one as a medium and one as a high-light tank... or whatever. :)
 

#3
Lotus: thanx for responding so fast, that is the exact info I was looking for. I have a 9 watt (500 lumens) in my 5 gallon with hornwort for guppy fry to hide, hornwort is doing well. In the 20 gallon I have green hedge with a 9 watt which I have to change to 50 or 60. The 35 gallon is getting slate rock and driftwood variations before I add water and cycle it. I have seen alot of amazing aquascaped tanks and I have asked alot of questions and did alot of research. When I
figure out the placement and fill the tank I'll take some pics so you can see. :)
 

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