Brownish Spotting on Leaves. Help! PICS

This is my first grow and Supposedly this is a "magic crystal" plant which is a strain of White widow and cali orange.

Im growing one plant just because its my first time and experimenting....

The medium is about 60%peat moss, 20% perlite, 20% vermiculite in a one gallon pot (pot may be too small as well)

I water once every other day

Its now about 4 weeks into flowering and the leaves just took a dump on me. i have curling at the end of leaves, brownish spots, and smaller leaves are turning yellow and most of the bigger fan leaves turned yellow and died already.

I'm using a 400watt HPS

I flushed it with 2 gal of pH balanced water of around 6.5 ish (used pH testing strips so its not exact) and i don't think its improving at all

the flowering nutrient i use is 1-8-7

Im guessing its a potassium deficiency but i could be wrong.

if anyone can help it would be greatly appreciated and i uploaded pictures for you to take a look.

Try repotting it for starters. I think you will want about at least a 2.5 to 3 gallon pot (about 1 gallon per month it will take till harvest). This also helps with stabilizing the pH and distribution of nutes throughout the root ball which I am guessing will be pretty root bound by now.

When did you do the flush? (may take a few days to notice the difference i.e. no more extra leaves curling up)

Jonus said:

Try repotting it for starters. I think you will want about at least a 2.5 to 3 gallon pot (about 1 gallon per month it will take till harvest). This also helps with stabilizing the pH and distribution of nutes throughout the root ball which I am guessing will be pretty root bound by now.

When did you do the flush? (may take a few days to notice the difference i.e. no more extra leaves curling up)

Click to expand...

thanks for your advice. you make a good point. i flushed it 2 days before i posted this thread. but yeah, i'll try repotting it and see what happens.....

i wanted to stick with that pot and hope it went well until harvest, but i guess not.

im not a fan of repotting, i end up making the biggest mess.

it looks like ph is unstable thats what the spots are
because of this your plant is not getting the nutes it
needs so yes i would repot asap m8

i just now got done repotting. i'll keep you guys on the update to see what happens. thanks for the advice once again. im new at this, so advice is awesome.

peace ya'll