10-03-2007, 04:35 PM
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I have that very same light over a 55 and it works fine for Cabomba, Swords, Saggiteria, and Bacopa carolinia, Rotala indica, Wisteria, and Crypts of various sorts. I am mystified by this, since 50/50 lights shouldn't provide enough light for some of those, but there you have it. One option is to rplace the lights with 6700ks or 10000Ks as I am sure someone mentioned.
On the Sword plants, plug a couple of flourish root tabs down into the substrate. Swords are heavy root feeders, and when they get brown and ratty like that, they are begging for iron among other things. On the Bacopa monnieri, take it out and replant with the stems an inch or 2 apart.