HELP! First grow, late stage in flower and fan leaves are yellowing heavily/curling up

[prismaticmunky]

This is my first rodeo so I don't know if this is normal. I've heard of leaves yellowing later in flowering. The breeder's little bit of info says that flower period is ~63 days and my girls are on day 48.

I had an issue about 2 weeks ago after returning from a trip where there were a few yellowed fan leaves near the bottom of the plants. I have an auto-watering system setup but I don't think that it was functioning correctly so the plants ended up getting under watered. They seemed to maintain ok after I got home, watered them and gave them some nutes. But not sure if that issues created this problem since it's yellowing leaves. I'm hoping that it's just normal for some strains when they flower.

Here's my setup for my two ladies:

• Spider Farmer SF-1000
• 2 x 2 x 4 tent
• 3 gallon fabric pots
• coco loco soil
• Tiger bloom nutrients for flowering stage
• Small intake motor at the bottom of the tent
• Vivosun 4" 195 CFM outtake motor at the top pushing air to a carbon filter
• 2 x 6" clip on fans blowing, clipped near the top blowing air downward towards the plants

I can provide further information if anyone needs it to help determine the issue. The only thing I can't get is a humidity reading because I haven't used a hygrometer in my setup yet. I'm planning on getting one for drying but can get one in a few days if I should be getting a reading.

[ChadWestport]

Good job, the plants are looking nice. It's not uncommon for the lower and larger fan leaves to show this sort of yellow later in flower if there was slightly not enough nutrients in the soil. This looks more like a natural fade than a lock-out issue. In either case, there is a deficiency, but this would be far easier to correct, simply by upping the nutrients slightly. You're pretty late in flower, so it isn't going to make a dramatic difference, but maybe go a little heavier on the next feed or two and then taper down until you begin your flush. Enjoy the journey!

[bboyfromwayback]

Yellowing of the leaves towards the end of flower is normal but be nice for them to be green a little longer. Are you only using Tiger Bloom not the FF trio together? If so that could be a reason. At this point I wouldn’t worry to much about them. The buds look good

[prismaticmunky]

That could be my issue! I thought that I was only to use tiger bloom during flower. None of the others mentioned use for flowering but I could be wrong. Am I supposed to mix all of them together?

[bboyfromwayback]

If you goto FF site they have a PDF of their feeding schedule you can print off. Just make sure to cut the doses in 1/2, full strength is too hot

[prismaticmunky]

Thank you so much! I can't believe I missed that really important step. Another lesson learned in the first grow.

[Rwise]

Whats the PH? To me this looks like a lockout of zink or maybe copper (could be short on N) caused by the PH being off to far.
I will also agree some yellowing is normal in flower, of the lower leaves.

[prismaticmunky]

I haven't checked runoff pH in awhile to be honest. I've been giving them 6.3 - 6.4 but I'll check runoff after I water today. Is that a good range to get the pH too?