Is this nitrogen deficiency?

34 days into flowering, watering PH is always hovering around 6.2 - 7.2, feeding seabird guano every week (NPK 4-26-3), also using blackstrap molassses for potassium, biobizz light mix soil, temps are about 25C and humidity 60%, light distance about 30-40 cm with 315W CMH. Not sure what is happening but she is yellowing from the botton it seems. If it is a nitrogen deficiency, shall I feed N during flowering at this stage, or is it another kind of deficiency?

Sure looks like it to me. I think you’d have better luck using a balanced organic amendment like Gaia green or down to earth.

93OG said:

Sure looks like it to me. I think you’d have better luck using a balanced organic amendment like Gaia green or down to earth.

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Agreed and seconded.

1# ......N deficient uptake, N is there but it began being locked out by an improper cationing imbalance in the mix,use clearing solution like DNF Clear.........or 2# ......There was never enough N available and immediately give xtra N now in late flowering ....................my pick its 1#