First grow 32 day flower and theres a problem help please!

Hi guys and gals , this is my first grow so im still learning and all was going well then i noticed that a few of my plants are turning yellow and pale green from the bottom upwards now abit about my grow and what ive been feeding them there currently 32 days of flower today, the strain is big buddha blue cheese there in 15L airpots , feeding ionic nute range i let my water sit for 24 - 48 hrs befour i use it i keep my PH at 6.3 and my ec at 1.5 i have 2x 600w hps above the plants and a 400w hps for side lighting i have fans constantly blowing through the tops of the plants and i have a intake and exhaust fan on 24/7 temps stay around 76 - 78f and humidity around 45-55% my feeding sceduale is water/nutes/water/nutes and so on they are getting 7ml bloom per litre 1ml boost per litre and ive just got the calmag and they also had one feed of that at 1ml per litre each plant is getting 5 litre water each they was getting 3 litres but they was drinking that up so i tried 5 litres and they looked fine but now the yellowing as come along sorry for the paragraph but im just kinda worrying a little as ive tried my best to keep everything in check any help/advice will be helpful , just another thing i didnt feed them any grow nutes i switched strught to bloom when i changed the lights to 12/12 could it be lack of N ? and are my buds/plants at the right stage for 32 days flower sorry for all the questions , thanks

Hey man, the plant is d
just doing its thing, it's getting ready to die and the buds are sucking all the good stuff up!
its totally normal.
it looks fantastic, well done!

Even at day 32 of flower? i seen this strain go like 65 - 68 days i thought they only start yellowing towards the end but im still learning just having a little panic right now haha

Seem's the plant is sucking the excess nutrients out the fan leafs since it's getting towards the end of the plants life. This is fine. If you want, and it's totally up to you, you can start adding a little bit of nitrogen.

could i add some grow nutes with the bloom nutes on the next nute feed or is that a no go just curious? when i went to the hydroponic shop the guy told me i need the calmag and that should solve this problem was unsure if he just wanted to take paper out my pocket

Try adding some seaweed concentrate to the feed (weak)
it will work as a tonic, but yer plants look good.
if it's working don't fix it and it looks like it's working.

What strains you running mate?

By the way that's a good effort for a first grow!

They are doing fine. Some plants yellow at the end, and yes its near the end. Looking good for a 1st time.

thanks for the quick replys guys your experiance puts my mind at ease and its big biddha blue cheese redeyedfrog all 8 plants are the same strain keeping it simple as its my first time cant wait for my next grow already excited seen some nice strains to choose from

What's up all! Newbie on my first grow as well. I only have one, not by choice though lol. It's 11 days old and has what I would call "blemishes" of a lighter green in the leaves. Almost like a rash type of look....anything come to mind?..still trying to figure out how to post pics

great grow btw bro,he'll of a first try, go big or go home huh lol

Yeah one of mines dinachem which I can't wait to finish up, I've been watching that strain for awhile