Yellowing hottonia

[Rodney]

Hello,

My newly planted hottonia seems to be yellowing. The didplis diandra and cardamine lyrata also seem a little anaemic. Is this an iron deficiency?

Some tank details:-
2ft x 1ft x 1.5ft
108 watts
1 bubble of CO2 per second
small amount of liquid fertilizer every other day
base fertilizer

Thanks.

[PeterGwee]

40-45% of a plant's biomass is carbon and 1% N and the rest even less. Go figure what is your real issue with that much light over your tank.

Regards,
Peter Gwee

[ct13]

I do not know what is the reason behind, but your lighting seem too high for me for a 2 footer.