Downoi, for me, was very temperamental. I could only grow it in shrimp tanks and it was a set it and forget it plant. After a couple months it started growing like crazy and splitting off crowns everywhere. I'm not sure if that one can be grown emersed, but I would make sure the plants you purchase are fully submerged growth. I've even had Buce that was emersed fail to transition to submerged after months of being in the tank.
Twin high tech 75's -
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