Yellowish color on most of the leaves and the cond...

Iam having problems with diaries who only have one week. Because there are more options why aplant looks like this. and the only one who knows whats the right one is you.. so iam starting. To me your leaves look like your plant was burnt // to close to the light , maybe 2-3 weeks ago because the yellowing is not at the bottom ara . Its in the middle of the Plant. PH flucutatons are possible too. as i dnt know wich soil you are using possible, But normally soil is vry stavle in PH ( if you use a stable mix), and nitrogen def=?... well if the leaves would be in the bottom area i would say yes. or if she would look limegreen ( all the leaves) i would say yes too. But to me it looks like an old lightburn. So tell us more for having abettr diagnosis