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RE: Long internodes
I have been doing a little experiment myself. I have one plant (I don't even
know what kind) that grows leggy, 1.5"-2" internodes. For my 55-gal, I used to
use 1 40w 5000K flourescent, 1 40w GE Plant & Aquarium (not sure of color temp
but it looked very pink), and 2 15w cool white 4100K bulbs.
I changed them to 1 40w 5000K, 1 40w 6500K, and 2 15w 6500K. The plant used to
be closest to the pink bulb, but now it's closest to the 40w 6500K. I am seeing
definite improvements. It used to grow at least 1" per day. Now it grows a bit
slower, but the internodes are about 1".
NO3 ~7 ppm
PO4 close to 0
With my weekly 20% water change, I dose 20-25ml TMG and 5ml Leaf Zone. KNO3
whenever needed. I haven't experimented with fertilizers. I will eventually do
that and report any findings.
So, Rachel. It's probably a combination of light and nutrients. Sounds easy. Ha!
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