Can anyone tell me about this plant? Is it difficult to grow? Invasive, Can it grow in gravel, Co2, etc.
Thanks for the info. I do have LED and was concerned about that."Rosanervig" is a cultivar of the stem plant Alternanthera reineckii.
Light is especially critical as this is a red-leaf plant (pink for this cultivar perhaps, but close enough). The red colour is due to the plant reflecting red light (green plants are green because they reflect green light). Red and blue is essential for photosynthesis, and of the two red is the more important. So, as the plant is reflecting so much red light, it needs even more in the light source. This is where most LED would fail, which I mention just in case your tank lighting is LED.
I can't seem to track down info as to who named this cultivar. I usually try to find this data as it can give you good info on cultivation. Maybe it's a secret!
Thanks so much!It's a marsh plant that does well in a garden pot sitting in a couple of inches of water. If you put it in an aquarium and give it good light, it might grow up and out of the water and it does well like that. But if kept permanently underwater, it usually rots. I had one in a 4x2x2ft tank and it grew out of the tank and had about 2 feet of stem and leaves above water and stems and roots underwater.
I used and iron based aquarium plant fertiliser (Sera Florena) and had lots of light (6 x 36watt fluorescent globes above the tank). Lights were on for about 14 hours a day.
I did not use CO2.