11-27-2012, 07:21 PM
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Originally Posted by Aurie
Yes you guys cleared that all up for me. My wisteria is growing in my 10 gallon with a 3100k ge "aquarium and plant" bulb and I won't buy it again. My crypts went crazy over the addition of flourish and I just wanted confirmation that a 17 watt t8 is enough so u don't kill 6 month old plants.
On that 10 gallon I just started getting brown algae and my snail won't eat it off the crypts .. do you think a new bulb might help?
I appreciate your input immensely.
Do you guys know of any daylight 6500 bulbs that aren't the bright blue .. it is a little rough on my eyes although I would deal with it if I had to
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The brown could be diatoms, but I am inclined to think probably not, as snails will eat this. It is more likely a type of brush algae. It is due to high light, I see it on plants closest to the light sometimes, in a couple tanks. A photo if you can post one would help confirm this. But assuming it is, the light may be causing it. This is the 10g, so what type of light do you have? A fluorescent tube, or screw-in bulbs (how many)?
On the colour hue, you can't get around this. The Kelvin (like 5000K, 6500K etc) is the colour temperature of light, how we perceive the colour hue. It so happens that plants respond best to light between 5000K and 7000K, with 6500K being the best, all else considered. When there are two tubes over a larger tank, one can mix tubes a bit to warm the colour, but with single tubes this isn't an option. But you could go a bit lower, using a tube around 5000K. I wouldn't expect this to be detrimental.