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**This is my first grow everything went great till last week , temp has been 80,s daytime then mid 50,s at night I put the plants in a unheated garage the ph is 7 I treated them with magnesium yesterday by using a hose end sprayer and epson salts some leaves turn yellow than die some turn purple and look like they are dieing also some plants the leaves are drooping
Hi @Thom57 I would start with this and I will tag a few people over who should be able to help:
COPY/PASTE: This “Support Ticket” into your forum post.
Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so = NA
Strain; Type, Bag seed, ILGM… name of strain:
Age from Sprout:
Soil in pots, Hydroponic, or Coco / Brand and type of Soil & Size of Pots:
How often do you water and how do you determine when to do so?
PH of water and runoff or solution in reservoir:
What is strength of nutrient mix? EC, or TDS:
Indoor or Outdoor:
Light system, size and height from plants:
Temps; Day, Night:
Humidity; Day, Night:
Ventilation system; Yes, No, Size:
AC, Humidifier, De-humidifier:
Co2; Yes, No:
Add anything else you feel would help us give you a most informed answer. Feel free to elaborate, but short, to the point questions and facts will help us help you
@Majiktoker @Hogmaster @Ragnar @Countryboyjvd1971 @bob31 @Donaldj
Your PH is too high at 7 and you are locking out nutrients it should be between 6-6.5 max. At high PH levels the plant is struggling to uptake any nutrients that is in the soil. With the limited information provided that all I can say…
You got them this big so you are doing something right but they looking to me they are a little bit stressed which is probably caused by Nutrient levels any how keep us updated. My 2 cent. With a bit more information…Someone can offer up a more detailed causes. Soil medium, nutrients if using anything, PH is 7 that we know. Ect ect
Well to me they really do look ok 
that yellowing in some leafs is normal,( especially this time of year growing outside , while I do agree your ph is kinda hi and maintaining 6.5 with no swing of more then 0.1 at a time is preferred. 6.0 is way to low . Any swing of 0.2 ph can cause a lock out and cause nute deficiencies causeing a plant to cannibalize herself . I don’t think that’s the case here but wait for more input from a true pro. Good luck 
Thank you very much they did good since I planted them in April outdoors now this just as they are almost ready to pick
Ok then if they are close to harvest and your are water flushing then this is expected. I think they look great good luck with the harvest.
Well they are looking quite healthy and some colours are normal to show during later stages of flower as is some yellowing the cooler temps will actually help to bring out some colours 
Some dead leafs aren’t too big of an issue…
I think they look a lil thirsty myself… saggy looking leafs…
Looks dehydrated and root bound
