what causes the leaves turning brown

[nicken]

Hi ,

i realise these few days my plant's leaves turning brown and some of them having the edge like being burned.

is it because too long photo time ? or too much fertilizers or too much CO2

thanks

[Shadow]

please post your tank spec and photo. Otherwise it s just a guess.

So my guess would be either K or/and trace

[AquaObsession]

maybe it is a brown leaf

**waiting for the photo**

[nicken]

[nicken]

is this lack of fertilizers ?