Dying lower leaves. Need suggestions

So this would be my last option as to rooting out the soulution for my problem. I have researched as far as I could as well as talking to my local hydro store owner. My guess would be a nitrogen diffecency. I got these plants as clones due to my buddy starting a industrial grow op. He had cloned too many plants and his partner ordered him to throw them away but instead asked if I wanted them. Having one grow under my belt a couple years ago, I know as much to atleast take his plants on and keep them alive. I purchased two 1800 watt LED 'bloom boss' lights and starting constructing a room. I am using the advanced nutrients line, connusuer a&B with b52 and sensi cal for veg. Promix for the soil
Here are some of the mistakes I have noted could be the culprit. -
-My first couple of waterings only watered enough for the soil to be saturated but did not drain.(I have later researched that you want 20% to drain out the bottom)
-I realized I added double part a of the nutrients and no part b one feeding. (I know this because my part b bottle still had a measured amount left after is finished the part a, and they were opened the same time and used the same amount of each.)
-No PH checking (figured I could get away with no ph meter because of the 'perfect ph' nutrients) have a meter now
-room was fluctuating in temps pretty erratic because I was still in the stages of building it as the plants were already in there. (Room stays pretty consistent now between 65 degrees Fahrenheit to 73.

I started to notice the lower older leaves on the plants begins to turn crispy and fall off and it started to happen and escalate fast.

I took each plant to the bathtub and flushed them with clean ph 5.6 water and their next feeding a regular amount of nutirents. And the leaves are still falling off.
I also followed up with a foliage feeding of revive by advanced.

Another round of research i found that the ph should be 6.5. Could that be the culprit?
The tops of the plants are showing no sign of stress and are growing pretty well still. I've been waiting for flip them into flower until I can fix this problem. I need to do it soon because they are getting too big!

Any input would be appreciated and I can include more information if anyone needs more.

Looking for the steps i should take to fix this

judging from the pics of the plant tops I have only one question
has growth slowed down at all?

you said they weren't.
if not, leave em alone, more often than not the best course of action is nothing
that being said, those container are a lil small for that big of growth.
they look healthy, the tops look great man.
the canopy is so damn dense there is virtually no useable light at the bottom, I've seen irregular leaves, drying up, shriveling, even turning black on some plants, and the growth doesn't suffer.
if the plants are still growing fine, leave em alone.

the plant's "body language" says a lot, they'll let you know if they are pissed
And they don't look pissed to me

greasemonkeymann said:

judging from the pics of the plant tops I have only one question
has growth slowed down at all?

you said they weren't.
if not, leave em alone, more often than not the best course of action is nothing
that being said, those container are a lil small for that big of growth.
they look healthy, the tops look great man.
the canopy is so damn dense there is virtually no useable light at the bottom, I've seen irregular leaves, drying up, shriveling, even turning black on some plants, and the growth doesn't suffer.
if the plants are still growing fine, leave em alone.

the plant's "body language" says a lot, they'll let you know if they are pissed
And they don't look pissed to me

Click to expand...

I'll agree with this. New growth looks good and praying. They look fine. With a thick canopy or like me when I guerilla grow, the bottoms don't get much light. a plant will use the stores in those leaves and shed them.

If growth hasn't slowed keep doing what you are doing.

greasemonkeymann said:

judging from the pics of the plant tops I have only one question
has growth slowed down at all?

you said they weren't.
if not, leave em alone, more often than not the best course of action is nothing
that being said, those container are a lil small for that big of growth.
they look healthy, the tops look great man.
the canopy is so damn dense there is virtually no useable light at the bottom, I've seen irregular leaves, drying up, shriveling, even turning black on some plants, and the growth doesn't suffer.
if the plants are still growing fine, leave em alone.

the plant's "body language" says a lot, they'll let you know if they are pissed
And they don't look pissed to me

Click to expand...

New growth hasn't slowed at all which is why I was in such a panic because I didn't want to flip them to flower without fixing the problem but their getting so big I can't wait much longer. As for container size their in 7 gallon smart pots. I originally took on 30 clones and the first three weeks I was trying to Manage em all. I ended up just fostering 15 and gave em back with left me with 15 and only one room dedicated to grow. I ended up switching rooms a month in because they out grew it. Donno my bedrooms in the smallest room and the plants in the largest. My plan was to flower 12 and veg 3 for mothers but the 12 outgrew the two led lights so I decided to flower 9 and veg the rest till the others finished but then the closet in the grow room got filled so fast that I just had to build a room in the basement to veg. I put the others in the basement last night so I'll be ready to flip to 12-12 and hope for the best.

Now they'll need to be watered again within a day or so, what type of nutirents would I mix for that feeding? Should I wait till the day I water them to change the timer?

Moss Boss said:

New growth hasn't slowed at all which is why I was in such a panic because I didn't want to flip them to flower without fixing the problem but their getting so big I can't wait much longer. As for container size their in 7 gallon smart pots. I originally took on 30 clones and the first three weeks I was trying to Manage em all. I ended up just fostering 15 and gave em back with left me with 15 and only one room dedicated to grow. I ended up switching rooms a month in because they out grew it. Donno my bedrooms in the smallest room and the plants in the largest. My plan was to flower 12 and veg 3 for mothers but the 12 outgrew the two led lights so I decided to flower 9 and veg the rest till the others finished but then the closet in the grow room got filled so fast that I just had to build a room in the basement to veg. I put the others in the basement last night so I'll be ready to flip to 12-12 and hope for the best.

Now they'll need to be watered again within a day or so, what type of nutirents would I mix for that feeding? Should I wait till the day I water them to change the timer?

Click to expand...

Flip when you want. Feed like you have. Those plants are fine and don't need anything.

Moss Boss said:

New growth hasn't slowed at all which is why I was in such a panic because I didn't want to flip them to flower without fixing the problem but their getting so big I can't wait much longer. As for container size their in 7 gallon smart pots. I originally took on 30 clones and the first three weeks I was trying to Manage em all. I ended up just fostering 15 and gave em back with left me with 15 and only one room dedicated to grow. I ended up switching rooms a month in because they out grew it. Donno my bedrooms in the smallest room and the plants in the largest. My plan was to flower 12 and veg 3 for mothers but the 12 outgrew the two led lights so I decided to flower 9 and veg the rest till the others finished but then the closet in the grow room got filled so fast that I just had to build a room in the basement to veg. I put the others in the basement last night so I'll be ready to flip to 12-12 and hope for the best.

Now they'll need to be watered again within a day or so, what type of nutirents would I mix for that feeding? Should I wait till the day I water them to change the timer?

Click to expand...

I agree with white, one thing I would change is getting those into a bigger containers, I'd go at least 10s for that size of plant, in fact the footprint of a 10 and a 12 gal are almost the same
but I wouldn't do much at this point, past what you are normally doing, don't try to alter anything

greasemonkeymann said:

I agree with white, one thing I would change is getting those into a bigger containers, I'd go at least 10s for that size of plant, in fact the footprint of a 10 and a 12 gal are almost the same
but I wouldn't do much at this point, past what you are normally doing, don't try to alter anything

Click to expand...

I would go to bigger containers.

Let the soil dry out some and it will be easier.

Bigger "roots" bigger fruits.