Leaves are curling or "tacoing" 3 week old seedlings

[Scriabin]

Hey everyone.

I have been working on curing my first grow that started from seed. My girls are 3 weeks old and have gone through a learning experience together.

Here is my set up.

Aeroponics
watering every hour for 3 , 1 minute sessions



Ph 5.8
24/7 lighting
Res Temp 63
Root zone temp 72
T5 432 8 light system; 5 inches from plant tops
Temp at plant tops 84
1500 co2
500ppm

I cannot seem to figure out what to do to cure them of the leaf curling/tacoing. I have moved lights up and down and seem not to see a change either way.

I have flushed the res.

I have lowered/raised the ppms.

I have 3 ph meter to make sure we are perfect

I use RO water with less than 13 ppm

I have no algae or smells

I have played around with water schedules and have seen no change either way.

I look forward to hearing what you all have to say.

Thanks

 

[jesus of Cannabis]

did you soak the hydroton before you used it to clean and rinse it off?

 

[Scriabin]

Yes, of course. I washed that dirty stuff for almost 2 hours and then washed it some more. Plus the hydrotron is around the rockwool cube

 

[notpatient]

not sure but 24/7 might be a bit much for the lil' guys,,, everything needs some rest esp. just starting off and I myself like to keep lower temps

 

[Scriabin]

not sure but 24/7 might be a bit much for the lil' guys,,, everything needs some rest esp. just starting off and I myself like to keep lower temps

Thank you for the info. I just lowered down the room to 76 and the ph to 5.6. I think it was a mixture of issues. My light is the right height right?

When do you recommend putting them under a 1000w MH?

 

[svchop889]

Nobody wants to say over watering? Its pretty visually obvious to me that that's the problem. Try cutting it to just 1 minute every hour and see if it improves

 

[svchop889]

watering every hour for 3 , 1 minute sessions

Plus the hydrotron is around the rockwool cube

the rockwool will never dry out enough. with 3, 1minute intervals every hour 24/7 way to much water

 

[Scriabin]

the rockwool will never dry out enough. with 3, 1minute intervals every hour 24/7 way to much water

Would 1 min/hour be sufficient? My rockwool cube is only a starter cube does that mean anything?

 

[svchop889]

well if you want you can just step it back slowly to see if the perk up some, but rockwool holds water pretty well and I really think that might be your issue. roots need oxygen at the root zone to perform proper transpiration. If a plant cant transpire water it can't take in nutrients either and you get what looks like a deficiency. Wait till the leaves reach up then water

 

[Scriabin]

well if you want you can just step it back slowly to see if the perk up some

OK, Thank you. I just backed off the watering fore the night I will see if it helps in the morning. Otherwise my plants look healthy right?

 

[svchop889]

Hey no problem, they look healthy enough to become very healthy very soon. the slight yellowing in the bottom leaves should green back out after everything is flowing right with them.

 

[Scriabin]

Hey no problem, they look healthy enough to become very healthy very soon. the slight yellowing in the bottom leaves should green back out after everything is flowing right with them.

Awesome, thank you.

 

[svchop889]

Your welcome how are they looking today?

 

[howhighru]

Thank you for the info. I just lowered down the room to 76 and the ph to 5.6. I think it was a mixture of issues. My light is the right height right?

When do you recommend putting them under a 1000w MH?

when i used my T5 for veggin my babies i had them about 1-2 inches from the tops of them..