Help, can anyone tell me what is going with my plants

[mrwitto]

first time grower, using soil, 600w and cana products.

everthing looked amazing till 3 weeks into flower. some leaves stared to go yellowy green, little redish brown spots appered, steams turned purple, very strange. anyway over the last week this problem has got worse. attached are a couple of pic to try and show the problem

 

[Resin Raver]

Is there any chance those leafs were damaged earlier on in their lives??? It just all the other foliage looks nice and healthy. Tbh I wouldn't pannic much about it, just keep an eye open for it spreading, but my money's on the damage was done a while ago HantsHaze...........

 

[DrOfDank]

Just by glancing at it, it looks as if your PH is off. What's your run-off PHing at? You want it around 6.5 in soil.

 

[mrwitto]

medium is soil., ph has been checked and is 7.

humidity was to high last week lol blame summer time., possible light was to close. really not sure what's going on., but it is spreading and appearing on all plants, some worse than others.

iv sorted the humidity issue, fingers crossed

 

[DrOfDank]

If the humidity has been resolved and the lights are not longer too close, yet in continues to spread, it's probably something else. What strength are you feeding nutes? Have you been foliar feeding?

 

[mrwitto]

cana flower, started at half strenth and pushed it up to about 75%