Underfed plant?

Hey guys, I'm trying to get some advice on what to do with my plants, they are in their final weeks and look sort (to me) nutrient deficient. I have been feeding them every watering, since they are in huge pots and get watered about every 8 days. They got flushed halfway through flower as well. Feeding GH FloraNova 5ml/L floranectar 5ml/L koolbloom 2.5ml/L AN b-52 1ml/L. The plants are in 5 gallon pots of promix under 1000w light. Night temps about 18c day around 25-26c humidity 50%. The pic of the very curled leaf is on my third plant that gets less light than the other two. It's much smaller and I think it may have been a tiny bit overfed since they all got the same nutrients. I know I should rotate but I have very limited room and timeframes to work in so that isn't my biggest priority. The pale yellow leaves with spotting on the other two plants are my concern, I want to start flushing the plants now but if they are deficient, is that a bad idea? From what I have seen online it looks like a cal and mag deficiency. They are 8 week White Widows from crop king seeds and May 1 will be 8 weeks. Thanks in advance for any advice you guys can offer.

First one looks like Mn deficiency and the second looks like and N deficiency or its doing like most plants where in flower the leaves just naturally start to yellow and the third looks like fringe. Which could be causes by salt buildup, not enough water or heat stress

Thanks for the advice! Would you recommend feeding one more time to avoid severe def at harvest?

So technically they should have 11 days left? I can't really see the bud as I can't zoom in on this pc but if they look legit 2 weeks out I have to say those plants are looking really healthy in my opinion. But also I don't think feeding them one more time would hurt anything just personally at this point I expect my plants to be taking leafs so I don't

Yes. According to the seed provider they are 8week flowering, although I probably won't be harvesting on exactly May 1.

I just looked at the plants a moment ago, and one of them has gotten quite a bit more yellow than it was yesterday. The edges of some of it's leaves are curling up too, don't think that was happening yesterday. I know they should be leaves at this point but it seems to be getting worse quick. I'll give her another shot of nutes. Are my temps ok? 18c/26c N/D. Forgot to mention this is under a 1000w HPS

I am an organic soil guy , and don't flush , but I would flush that medium out and let the plant consume what it needs from the leaves for the next 1-2 weeks monitoring its hairs and trichomes for final harvest.

Every watering is way too much feeding. Next time try feed feed water. Seems like they are overfed with chemicals and they are trying to get rid of the excess chemicals, just like the human body does. If I were you I would stop feeding now and give straight water for 2 weeks then pick them

Interesting, thanks! I made the mistake of getting into 5 gallon pots that still hold water for 7-8 days, wasn't sure if it was a good idea to give just water for that long. The water that I use comes straight out of the tap with no evaporation or anything, could chlorine also be playing a role here?

Yeah. Tap water is no good. There are lots of things besides chloride that is in tap water

Great... My city has had water quality problems in the past too. Specifically so much manganese in the water that it turns brown (didnt feed plants any of that). I'll grab some r/o water for the flush. Thanks again for your help, guys.

That's not true , its either chlorine or chloramine both just keep micro-orginism from growing out of control chloramine is less productive but doesn't evaporate, chlorine is more productive but evaporates meaning has to be replenished , like a pool.

You fed to much now its time to flush.