Week 5 flowering plant problem

Hey guys, this is my first grow and I'm somewhere between 4-5 weeks flowering. The ends of my fan leaves have started to curl upwards and turn brown,along with some of the older fan leaves getting brown spots and yellowing. I've also noticed that there is some purple around the edges of my fan leaves too. My guess is that I'm having multiple deficiency issues I'm just not sure how to fix it.

Here's what I use
4ft 8bulb t5, 6 42watt cfls
Soil - Happyfrog
Nutes - Dyangrow Bloom
High temp - 80
Low temp - 66
Humidity 40-50%
Water PH - 6.5-6.7

Pics attached as well, any comments are greatly appreciated. Thanks!

Look overnuted, need to flush them well with 7.0 water and then go back into your nutes at half the strength that your using now.

Air said:

Look overnuted, need to flush them well with 7.0 water and then go back into your nutes at half the strength that your using now.

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I definitely over nuted them a little bit a couple weeks ago, which is why the tips are a little burnt. But the yellowish/browning of the tips doesn't seem like a burn to me along with the brown spots and purple edges of the fan leaves. But I don't really know which is why I'm here thanks for your input, I'll probably do the flush and see what happens. I'm going to add a couple more pictures just in case.

Calcium deficiency, i'm having the same problem with one of my girls at week 5-6 flower. I just ordered a small bottle of calmag and have been only feeding water this week to try and flush a little bit. My biggest guess is that its a ph issue being too low due to the nutes. So I am hoping just watering for a week and half might help to correct the problem along with a little calmag.

you have calcium magnesium and nitrogen def

Thanks, I appreciate all the input guys. I'll pick up some calmag today. How can I increase nitrogen without upping the amount of overall nutrients I give? I don't want to nute burn my plants again.

You should post a pic of the entire plant

jrg9219 said:

Thanks, I appreciate all the input guys. I'll pick up some calmag today. How can I increase nitrogen without upping the amount of overall nutrients I give? I don't want to nute burn my plants again.

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Nitrogen shouldn't be a concern at this point, the plant is going to use all of it's stores so just let it happen. The leaves will continue to yellow and thats actually a good thing. You should be giving the plant very little grow food and more micro/bloom food at this point. You could try adding vitamins like Advanced Nutrients B-52, it could help a little bit.

Dontae said:

You should post a pic of the entire plant

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as requested (sorry for the sideways pictures and the crappy quality )

indikat said:

you have calcium magnesium and nitrogen def

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I agree, but I think all the deficiencies are slight. I don't think they will need much of a flush at the end. I wouldn't quit feeding them either. FWIW I use Dynagro Foliage Pro or Grow most of the way through. I find I use very little bloom nowadays.