I've grown everything out their from Tonina species to blyxa and to ludwigia pantanal. The only plant that i know that i haven't been able to grow is utricularia graminifolia. What am i doing wrong? I keep my planted aquariums at 77 degrees with undergravel heaters to promote root growth. I have high lighting with high co2 injections and i dose with full nutrients, so that is not the problem. I do have hard water, but that hasn't been a problem for me in the past. I've tried growing it emersed and submersed with no luck. Does anyone have any experience with this plant?