Hornwort Browning?

[phantomlink]

I have a few clumps of Hornwort in my tank, and when I saw they had no roots I looked them up saw they were a floating plant. I still have one clump I planted in my sand but the other 3 I have free floating around the tank seem to be browning a little. If I have to add co2 to the tank because of all the plants I have, I'll just move some over to my new tank later today. I dont know if its harder for them to get nutrients while floating around the tank compared to dug into the dirt

 

[Ps3Steveo]

They get loads more light floating so prob why they're turning brown mate.

 

[phantomlink]

Huh... I thought light would be good for them and help them grow a little faster, guess I dont know much about plants I'll squish them together and plant them in the morning, I just started cycling a new tank so my hands are ammonia stained and after I wash them then they'll be soap <.<

 

[PrairieSunflower]

I usually have medium to bright lighting and find they grow a couple of inches per day.

 

[Ps3Steveo]

Floating just gives a lot more light so you may find its too high at the surface.