Brown spots and dying off of older leaves

[BamaGrow]

I need some help here. A week ago I noticed a few spots on some lower leaves the day after a 25% feed. I thought I may have been clumsy and got some water on the leaves which resulted in nute burn. I did another feeding last night at 50% and now I am seeing some spots with yellowing of leaves and necrosis at the bottom leaves. Any ideas on what I am seeing here?

My setup is Promix BX and GH nutes. I fed a week ago at 2ml/gallon each of Grow/Micro/Bloom. Yesterday I fed 5ml/gallon each. I have been watering every 2 1/2 days like clockwork and the soil is dry when I water. Definitely not over watering. Water is RO with ph adjusted to 6.0. Runoff last night at feeding was about 6.5.

Of course, here are the pictures.

 

[fromseed2weed]

Roll Tide?

 

[growdawg30'z]

im no expert but it seems like nute burn...i may be wrong but i do alot of research on this site and it sounds like nute burn lower the strenghts a little...do you have cal-mag???if so use some it will help alot if it is nute burn....im sure someone with more exp.will chime in and let you know pm.muddy or joe dirt those guys are great with nre growers.....just my

 

[gearbear]

Me either, but I'd agree. Looks like your having a bit of nute lock-out and nute burn. Those plants are so light/lime green. esp. for this age.

the dr. says bubble ya some ph'd worm casting tea and use heavily for your next few feedings. lay off the nutes until ya see deficiencies on new leaves or flowering begins.
but just a suggestion

by heavily, I mean allow excess to run out, do not allow water to set in. be cautious with peat pots as they sometimes can not breath as well as you would like. (take a small point, paper clip? and poke ya a few holes all around) but also use caution as 1 day of over-heat can dry those boogers up and kill your plant back or stunt it. put into pots before long.

 

[gearbear]

I actually cut the bottoms out of my peat pots and set into a slightly larger square pot to allow for better drainage air, but keep from over-dry.

 

[namvet]

How old are they? could be nute burn but with those lite feedings that shouldnt happen.If you put them in bigger pots I would flush with plain ph water for awhile until roots are going into new pots.What size are your pots?Looks like the pots you put them in are to small.I would go with bigger pots and set those peat pots completely under the soil and dont feed for a couple weeks.I hope they turn out.

 

[BamaGrow]

These are 4 1/2 weeks since germination. Those are 5" peat pots. I will transplant this afternoon and see what happens. My first feeding was last week and was only 1/2 strength and second was yesterday at full strength. The pictures taken was under metal halide light so it adds a little blue/green to the colors.

I will transplant today, I hit them with 5ml/gallon calmag last night before I went to bed. Will see what happens.

Thanks a ton for all the replys! You guys are awesome.

 

[BamaGrow]

Roll Tide?

ROLL TIDE, Tide Pride Member here!

 

[BamaGrow]

How old are they? could be nute burn but with those lite feedings that shouldnt happen.If you put them in bigger pots I would flush with plain ph water for awhile until roots are going into new pots.What size are your pots?Looks like the pots you put them in are to small.I would go with bigger pots and set those peat pots completely under the soil and dont feed for a couple weeks.I hope they turn out.

Those are 4 1/2 weeks. I have 5 gallon Oregon Breathers ready to drop in so I will transplant today, thanks man!

 

[fromseed2weed]

ROLL TIDE, Tide Pride Member here!

Sweet! Nice to see some Alabama brethren on here, good luck on your grow.