What do you think? Deficiency or abundance or ph or light burn?

One in dwc, one in rockwool in soil. Light is as far as physically possible about 25inches. Just changed the water, ~950 ppm, pH~I aim for 5.5 it was up around 6.4 so I add less water and more phosphoric down. The leaves are just kind of yellowish orange tinge to them.

The temperature is too cold at night, it’s around 18 celcius at night. I would like to keep that higher... and I have been around 25-26 during lights on. I used to be able to get it to 28 with another viparspectra light in there. It’s a 2x4 so the light might be too much for the space. Optic 4. I’m putting GH maxigrow and maxi bloom and KOOL bloom POWDER. I sometimes put a pinch of Epsom salts. I put a 1ml squirt of CalMax every once and a while. I have the purple stems so I been putting a slight extra bit of Koolbloom for a bit more phosphorus. So you see the yellowish sad look? Yellowing at the tips... what do you think? Thanks

Starting to look better. I think the one in soil was HUNGRY. So I flushed just in case, ppm out was 800, maybe salts, then poured some 1100 ppm a mix of grow and bloom, and now the yellowing stopped and green has come back where id was fading.

The hydro boy has too many buds! They are getting too big! Anyone else have this problem! . But I do have to defoliate because there are buds inside that have not seen the light off day. I need more string to pull the branches down.

Pro tip: don’t try to grow in a 2x4. It’s too small