Help! New and having issues late into flower.

Have 3 beautiful girls 6 weeks into flower turning very yellow and possibly stalling?? on me. I think they're root bound and not sure what I can do to help - 45 gallon pots and way too big bulky to transplant. Any ideas are welcomed, thanks!o

what are you feeding them? is the entire plant turning yellow or just the older leaves? at this stage the roots have finished growingt.

Pics

Cal-mag

Pics pics pics .......gotta have pics to help ......45 gallon pots are good size and I doubt it's root bound ....I've had several 12to14 foot plants in that size pot no issues ...it could be normal fade in late flower ....but pics pics pics pics pics ....if you want real help that is and not a bunch of guesses or ASSSSumptions....

Here's an idea of the setup and some before an afters- bit of a grey wet day here I'll have to update with better photos tomorrow. Thanks so much for the response. I think they're root bound as they seems to have become hydrophobic on the top - feeding is a very slow tedious process. Any ideas about how to make that better would be great too!! Maybe the problem fungus gnats - took care of the original outbreak but that was weeks ago, maybe still in the top of the soil?

Gotta feed em more, there large and hungry.

Thank you ^ I'll try to up my feeding schuedual.

Would a dunk help moisturize the rootbound pot? Thinking the only way I could pull it off is the get a trash bag over the bottom and fill with water - thoughts?

Also, thoughts on this being a pH problem?

Probably a little over worried but it's my first good grow and they're so close - would hate for something to happen at this stage in the game.. that's about a year of not paying for medicine for my mother, would help immensely.

Why not just saturate em with food or water when ya need em?...I bet the roots are growing through those pots on the bottom...I wouldn't lift em up and disturb em...food is cheap, I use Jacks classic in veg and citrus in bloom...I can feed 15 plants bigger than that for 3$ a month.

Bryan McCulloch said:

Here's an idea of the setup and some before an afters- bit of a grey wet day here I'll have to update with better photos tomorrow. Thanks so much for the response. I think they're root bound as they seems to have become hydrophobic on the top - feeding is a very slow tedious process. Any ideas about how to make that better would be great too!! Maybe the problem fungus gnats - took care of the original outbreak but that was weeks ago, maybe still in the top of the soil? View attachment 3784417 View attachment 3784421

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Don't let them get too dry before you water and make sure there is no gap between the soil and bag or the water just runs out. Wet the top soil with a fine spray before you water/feed that will let the water go down. A worm casting tea will green them up but this close to finish don't do anything drastic just get them to stop yellowing.

Thanks so much for the help! Built a slow drip system for them, upped there flower nutrients and added "mammoth" and guano to the mix as well. They seem to be happier today.