mite have a problem not sure

this is my first grow and i dont know if i have a problem or not. all my plants are white widow and they were all form feminzed seeds. i have enclosed some pics. the bigger plant in the middle is a week older then the others. my system is a aero system. the leaves on the bigger plant seem to be a bit droopy and some of the lower leaves started to curl in. but the one set of leaves looks a little withered. but this is the only one all the others look great. i check the ph and it was 6.8 advanced nutrients recoments 5.5 to 5.8 so i reset the ph to 5.7. so i will hope that this corrects the problem. any advice would be hepfull. i check all over this forum but i can't find my problem anywhere. thanks and happy growing

I don't know anything about your method of growing so I can't help you. But I can help by bumping your thread up for you so someone who knows the answer can see it.

sorry everyone o a, useing a 45 gal toat with a sprayer system the toat has 10 gallons of water in it mixed with the nut solution also there is a 16 inch air stone in the water to air it. the sprayer stays one 24 hors a day along with the airstone. but the light is 18 and 6. hope this helps out

pg1210 said:

sorry everyone o a, useing a 45 gal toat with a sprayer system the toat has 10 gallons of water in it mixed with the nut solution also there is a 16 inch air stone in the water to air it. the sprayer stays one 24 hors a day along with the airstone. but the light is 18 and 6. hope this helps out

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there is one more possibilty the big plant the one in the middle its roots are submerged in the water should i trim the so the hang in the air or no. all the little ones roots are still hanging above the water and have not reached the resi yet. this could also be causeing my problems wat to you think.

Make sure the water is clean and nothing has accidentally contaminated it. Check to roots to ensure they are covered with the water as any part of the can dry out even if a small portion of the root ball is out of the water. If you adjust the ph levels then it might take a few hours to a few days to see any improvements. Allowing the ph to get out of perimeters will in some strains, show signs that you have described. Al;so the bigger plant may be struggling a bit with all of the other plants sharing the same environment. Consider moving it to it's own container. In some hdryo based systems I have worked with the ph fluctuates when a lot plants are using it because if they are not sized for the number of plants in them, the ph goes down all of time requiring more closer attention. The lowering of the ph due to a lot plants using one system then adding more to boost the ph, can cause symptoms like your experiencing.

Peace..Autoflowerchild

thanks autofloowerchild i can move the bigger one to its own container. i will see if that helps thanks