Do you think it can be IRON?

I've been hitting them with all supps other then....

Or could it be not enough of bloom being that they came out of bloom messing them up?

Any help would be appreciated...

I have just been going in a 5 gallon set up 20Ml micro 20Ml grow and 20Ml bloom on everything because the clones are fresh.....

Tomorrow I get the T.D.S pen Back called Oakton they straightened it out in 1 day Hydro Farm was saying 3 weeks plus... Feed the Dog that Barks I guess... LOL

I've been trying to go through and ween out all the possible probs I just can not get it!!!!!