N Deficiency or something else?

[czarstroke]

Hello there!

I am growing 2 Fast Buds Gelato Autos in Biobizz light mix with Biobizz nutrients. They are 34 days old. There has been a yellowing slowly progressing up these plants and it seems too early for them to yellow. I slightly upped the Biogrow, and today I foliar fed with Biogrow (for N) and a pinch of dissolved epsom salt. Id love any feedback as I just wants my girls healthy.

 

[Fitzy]

So wat ppm and ph have u been feeding I see some tip burn so could be a ppm build up if the plants aren't eating all u feed the medium will hold it and when ppm is to high it will cause lockout and deficiency but let's see wat others say also

 

[namvet25]

Back off the nitrogen a little and start using bloom nutes and cal/mag .

 

[Waira]

-- looks like P defc to me,. not N... that brown wasting is hallmark P defc.,... dial the nutes in for better P-K input, and/or get a dedicated PK booster...