Leaves Curling in soil

S= Soil

E-indoor
E-soil
E-specific medium (not sure of the brand)

SCL-Added nothing to the soil
SCLR-Unknown
E-Water source(TAP)
E-Source water pH (7.0)
HRT-
E-Age of plant ( approx 9 weeks)
E-Type of fertilizer (bcuzz soil 2 part)
E-Rate of application (every other day ppm around 700)
E-just switched from 1000w dual to 400 watt mh to make room for an e&F table on 24/7)
E-72 to 76 no dark period
HD-70 degrees
E- staying high until i ventilate usually around 60 to 70 % sometimes as high as 80% ( need a dehumidistat)
E-24/7
E-Active exhaust and passive intake. air cooled reflectors
TR-no
PH of nutes is always between 6.8 and 7.0
Some background:
I got these plants from someone and they are in 5 gallon buckets with no drainage, just a 1 inch pipe stuck to the bottom.
They were badly stressed and stunted but they have recovered nicely.
1 more week until they are turned to flowering.
Started noticing a slowing of growth over the last 4 days and have some fan leaves curling under now on one plant.

Question:Are these plants rootbound?
If so can i leave em in there for another 6 weeks till harvest?
Should i transplant into bigger buckets?
I use no nute additives
I water from a holding tank which is aerated.

The one in the water farm is 3 weeks from clone. (nice)

I am fairly new to this and any help would be greatly appreciated.

Nasty

Leaf curl under is a symptom of over fertilization lots of times. Maybe cut back to 1/2 strength and see if they look better. You can flush with water. You need to drill lots of drainage holes in buckets. They don't like standing in water. Looking good. Have fun.

LolaGal. I have just started one month into veg with PPP. I really like these fems, so bushy (hydro drip). I have not seen this in my short time, but the leaves are turning up on some on the edges, is that a nut problem too> Running about 500-650ppm at one month.

bump

Well sorry but here goes. Leaves curl up and die along the tips and edges with Magnesium deficiency. Use Cal-Mag product. Epsom salts work 1 tbsp per gallon, but has lots of salt that is bad. Deficiency symptoms start on lower leaves which turn yellow, leaving only the veins green. Then leaves curl up and die. Foliar feed of Cal-Mag recommended to improve new growth. This is fairly common deficiency.

Maybe this will help you both. I hope so. Hows your curl down leaves? I meant drain holes in the soil plants. Maybe someone more experienced will come along and help. I recommend buying a grow bible for you both.:)

Thanks for your response. I wonder if maybe stinky attic is gonna drop by?

Yeah. Your plants are pot bound. PPP will outgrow its pot REAL fast. You need a gallon of medium for each foot of main stem. Also make sure your air flow is enough to supply ample CO2 to a horde of monsters.

That is neither overfert nor Mg deficiency. I don't see any 'leaves curling up and dying'... and the first sign of Mg def is BOLD even stripes on the leaves.

Thanks for your input stinky.

Those plants are monsters!
And they look pretty fine to me.
What's the problem anyway?