May have a few issues

so this is my first grow.
3 gal buckets
Soil is miracle grow premium potting soil with some extra perlite.) ( not the best choice I know now )
Vegged 7 weeks
Now in mid week 5 of flowering.


400w HPS in 4x4x6 tent
With a 150 W CFL. For lower supplemental lighting.

Have 4 ladies 2 Liberty haze 2 cookies kush

Has been going very well so far had not really been adding nutes till 2nd week of flowering fox farm

Used the heavy feeding dosage

And have been using half dosage every other watering

Water every 3 days and check soil to make sure it's dry.

I don't have a ph Meter

One if them the plants leaves are curling in a way I haven't seen. Long ways like lengthwise.

Another plant shows bottom leaves yellowing like a nitrogen deficiency ( I'm pretty sure)

Then I have yellow spotty leaves on another plant.

Peep my pics

Not sure what to do and I feel like time is running out

watch the new growth to see what is going on those old lower leaves are going to yellow and fall off in flower, the curling usually has something to do with soil moisture. they look good don't do anything drastic