Lime green leaves and new leaves are thinner but otherwise healthy plant. Help plz!

Hi this is day 32 of my growth, 3 days before I am flowering her. The plant is extremely healthy overall but there are some things that got me worry. Some of the leaves at the bottom branches are getting lime green? Is this some kind of deficiency? I am feeding it fox farm week 4 at the moment. The new leaves that are growing out are healthy but they are thinner than usual. All the other leaves that grow out before are always bigger, never smaller. I know that when they flower they get thinner and less fan leaves but this is a 9 fan leaves that is 2/3 thinner than the previous leaf which is really strange. My root are all over the 5 gallon bucket. It is basically filled up. Do I need to get a 7 gallon bucket? I don't want it to be restricted or anything. One more thing is there is about 1 or 2 small yellow dots on some leaves. Like 1/2 millimeter of yellow (necrotic) dots. It looks like bug bites but except there's no bug I am sure. Here's my grow info and I'll link to my journal in case you need more info. Thank you so much for your help in advance.

• -400 watt metal halide/high pressure sodium light
  -Deep Water Culture 5 gallon bucket with 10 inch net bucket using hydrotons as medium.
  -Confidential Cheese clone currently at DAY 32 (3 more days till flowering)
  -Full Fox Farm Nutrients, these organic microbes samples that my hydroponic dealer give me (in the pictures), Great White microbes.
  -Roots are really healthy and taking over the bucket completely, also slight brown stain. I have read that the light browning is because of the fox farm big bloom.
  -The original clone were pretty sick looking when I got them but they are now really healthy looking as you can see the differences of the old/new leaves in the pictures.
  -Temperature at around 80 (a little warm but plant doesn’t seem to mind), PH at 6.0, ppm/ec unknown but I am feeding at 1/2 nutrients and ½ microbes at 3 gallons and the plant seems to like it.
  
  Link to journal just in case:
  

  • https://www.rollitup.org/grow-journals/561487-first-dwc-hydro-400-watt.html
    
    
    
    

  
  ​
  
  
  
  

https://www.rollitup.org/attachments/grow-journals/2358527d1349221937-first-dwc-hydro-400-watt-img_0176.jpg
https://www.rollitup.org/attachments/grow-journals/2358528d1349222012-first-dwc-hydro-400-watt-img_0177.jpg
https://www.rollitup.org/attachments/grow-journals/2358529d1349222077-first-dwc-hydro-400-watt-img_0179.jpg

looks good to me man, if roots seem like a problem to you i would transplant before flowering (like atleast a week) and also the leaves show some signs of heat stress so if you could bring the temps down a bit somehow would be helpful. as for the yeelowing of the bottom leaves, that SOUNDS like n difficency but hard to tell. otherwise looks beautiful man!

looks pretty alright to me. legalize pretty much hit it on the head, see if you can bring your temps down.
Also, older leaves will start to gradually discolor as they age...just keep and eye out for anything else weird. you seem to be doin a pretty good job so far!!