09-16-2013, 07:46 AM
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I have two tanks that I swap plants between... one is a 10K florescence, and the other is a 6.5K LED light strip.
Java Fern, Java Moss... plants of this nature do well in just about any light. They still grow very slowly, but nothing I have found really speeds that up. They have grown SLIGHTLY faster in the LEDs. The ones deeper in the tank, 22" or so, grow faster than the ones that are only a couple of inches below the waterline.
Amazon Swords are very light dependent. In high light situations, they grow out, lying low. In less light, they grow up. The ones that I moved from 10K to 6.5K actually curled and ruffled... very pretty. The 10K swords produce runners under the sand. The 6.5K swords send runners to the surface.
Water Wisteria under LEDs lives fine, but grows slowly. They resemble underwater trees. Under the 10K lights, with room, the Wisteria quickly becomes unruly. Looks more like a bog of choking plants.