any insight what may be happening here? day 33 flower

Some leaves look burnt while i feel like others may be a deficency, im running current culture nute line, ro water, with their calmag at around 3ml/gal.. total ppm is around 870 (500 scale)

res temps 63-68f / ph 5.7 to 6.0, usually 5.8/5.9, room temp days 75, nights 68, rh days 40% nights 50%

left strain has purple genetics

i do res change pretty often, about 5 days out from one now, trying to figure out if i should do another and raise or lower anything.. any help greatly appreciated

I am running these plants in dwc, this is my first hydro grow

few more pics cant hurt

Overall, it looks pretty normal for midway. You're showing some minor calcium def.on the older fan leaves. Perhaps, upping your cal-mag dosage for a few weeks. Just monitor and adjust based on what the plant is telling you it wants.

thanks man! thats a breath of fresh air, i feel like cultured solutions nutes recommondations are wayy low, so im running slightly above them, i was thinking calcium too or perhaps pottasium, but then i thought maybe im burning them due to some of the yellow tips..

I will do a res change tomorrow and up the calcium!

They look a little short on Mg and Ca, but still decent enough. Some of your pics show pretty dark green leaves; I would be cautious in adding too much N at this point in flower so be mindful of the CalMag and anything else you use that might impart N.

Starting to get nute burn, reduce feed by 10%.

From my personal experience advanced P def looks like a cal/mag def but then again excess P locks out Cal Mag and other micros, thats a tough one. if it doesnt get better id flush and till you read low PPMs and start feeding a less than half strength.

CannaCountry said:

They look a little short on Mg and Ca, but still decent enough. Some of your pics show pretty dark green leaves; I would be cautious in adding too much N at this point in flower so be mindful of the CalMag and anything else you use that might impart N.

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II agree with Canna on the calmag. Plant could use both. But sorry I just don't see the N excess symptoms...I say don't sweat the N issue too much. And if I were to choose just one supplement right now...it would be MG.
Good luck,
JD

Looks like magnesium, at the very least. The purple petioles (leaf steams) are a good give-away.

How do the roots look? Sometimes when you can't track a problem down, or multiple symptoms, it usually means root trouble.