Iím not sure which forum this query belongs in, but here goes. I picked up these plants about a month and a half ago. The redder of the two seems to be growing fast and doing very well, but I canít figure out what it is. We were thinking Ludwigia when I got it, but I canít match it to a species. I think the greener plant is Nesaea pedilica (sp?) but Iím not exactly sure. I may still be looking at a transplant shock, but this plant is growing slower than Iíd expect from a stem plant and the lower leaves are showing black discoloration. Also, it hasnít reached much above 6Ē but the top/new leaves are coming in with an orange flush. Iím pretty confident with the water column parameters and light level, but my sustrate is long, long overdue for a change-out. So, basically:
1- What is the red plant?
2- If the green plant is N. pedilica, what are itís substrate preferences? Is it generally a forground or midground plant? Is the black a sign of stress? (seems to be getting better, but Iím still curious)
50gal, heavily planted
Half tank under 150W HQI MH pendant, Half under 30W PC
(unknown plants on the bright side, fairly close to light source.)
pH: 6.8-7.0, day/night flux due to CO2
Hardness: 6.8dKH, 7dGH
NO3: 2-7ppm (added as KNO3)
Also fertilized with K2SO4, and Plantex CSM+B, Mg, Fe, and Flourite root tabs.