Need help with DWC grow. Leaves curling

I will provide some pics so maybe someone can tell me what the problem is with my pineapple chunk.

that don't look like no DWC I seen, what is the medium???

Using coco coir chips

ok... a couple questions

nutes??
lights?
# days veg??
PH??
why does the water look dirty??
why does the coco not dump out with the plant sideways like that???
did you lolypop or is that how it grew??

Seems like the pH is off or the roots are not getting enough air!

Nutes are foxfarm grow big, big bloom 1/4 strength . 5 gal bucket
Mini Sunburst Full Scepctrum all in one grow light 150 watt
week 5 of veg
ph 6.5
we did mainline
water is not dirty may be the nutes is why is looks like that

I bought a new air pump last week that gives way more bubbles than the last one, so it's getting plenty of oxygen

PH should be 5.8 in veg

it can drift up in the 6.1/6.2 during flower

if you have not read this you really need to.....

https://www.rollitup.org/dwc-bubbleponics/234626-rosemans-diy-bubbleponics-tutorial.html

what is "mainline"??

Ok so all I need to do is lower the PH. I think main line and Lolipop is the same thing, don't quote me on that.

I just lowered PH and we will see if that helps . She was fine and then just curled all of a sudden

I think the fox farm is organic or has organics in it. we generally use salt based nutes in dwc like dyna gro or gh flora 3 part. organics can/will turn a dwc bucket into sludge. you will prob also want to run beneficial microbes if you aren't already... it doesn't look like you are.

as for your leaves someone once told me leaves curling down means issues with roots water nutes ph medium etc. leaves curling up means issues with environment... heat humidity wind burn etc. at 6.5 you prob had some ph lockout going on. your plant tries to uptake nutes through the roots but if the ph is off it's like sucking a milkshake through a straw.

I also think she needs more light or you need to move your light closer or something.

Looks like nitrogen overdose to me. What are the ppm levels?

mainline and lollipop are completely different.
lollipop is just to defoliate the lower portion of your plant in theory concentrating it's energy to the top portion where the greatest light penetration can be had.

mainline- is a method where the main stalk is almost split at the beginning so all the following growth is formed from the same shoot. there is a great thread about mainline done by nugbuckets

Can someone here give me little help as to what brand and what nutrients I should give me plants from start to finish since this fox farms obviously is not working and is hurting my plants . I have 2 autoflowers and one blue dream aside from this who seem to be doing quite fine. The pineapple chunk is the only one who threw a fit, the other ladies seem to be pleased

Dyna gro is good for dwc. There is a thread about it in the nutes forum. You should also get some aquashield to keep the roots white... or pondzyme from petsmart or petco.

As stated PH is high. Im not sure what your issues are as Im a newb and run different system but at week 5 you should have a huge root ball IMO. Also plant is kinda stretchy, if not strain related it could be lighting as well. Here's some plants at 15 days from seed . They are under 4 T5's and will move to a 600HPS in 5 days. ph is at 5.8 and running around 350-400 TDS. how often do u change water? And again as stated, IMO it is easier to run a sterile res when a newb for easier nute level maintenance, may get slammed for that lol. Good luck!