Overfed? Too Dry? Confused

[scooby73]

Think Different Autos
22 days old
12 litre airpots
Using small rockwool cubes for grow
temps 28
off temps 23
Using canna vega A+B 20ml of each in a 20 litre bucket with a ph of 5.8
Light about 28 inches from canopy
RH 50-60%
Lights on 20/4
Lights 2 x 1000w but using digital balast on 400w each light

Plants seem very shrivelled and leaves are curling, they actually seem very dry, been feeding them for the last 4 days, half litre in morning then half litre at night..

Have a few others that seem to be doing fine so confused with these ones.

Please help a noob




cheers
scooby

 

[Sir Chiefs a Lot1]

So you've been feeding it 1 liter of water every day for the last 4 days?

 

[namvet25]

Looks like too much nitrogen,back off the nutes for awhile.

 

[scooby73]

Back off completely or just cut in half? Others seem fine just 3 that are like this.

 

[namvet25]

I would just use plain water for a week on the ones with the problem and see if that helps.You have to get rid of the excess nitrogen and then start with a real weak nute dose,and work your way up as they get bigger.

 

[Duck Commander]

I would say over watering mate 1L per day at such a young age and no where near full flower..:thumbs: I would suggest leaving them to dry out a bit and then feed 1L every 1and a half days to 2 days and also add more grow. they need N!!
you also said your PH was 5.8 in soil? if so that need to go up to around 6.5 IMO:five:
Si

 

[scooby73]

They are just purely in rockwool 1cm cubes mate, no soil. Been watering everyday as the water really leaks out of them airpots. If they were in soil i would water nowhere near as much. I'll hold off the 3 bad ones and ust use ph water to see how they get on, one of them is way smaller then the rest.

 

[Duck Commander]

They are just purely in rockwool 1cm cubes mate, no soil. Been watering everyday as the water really leaks out of them airpots. If they were in soil i would water nowhere near as much. I'll hold off the 3 bad ones and ust use ph water to see how they get on, one of them is way smaller then the rest.

Ahh ryt not too sure how that works TBH but i still think their overfed and lacking N but as i said not sure on how it works with rockwool:thumbs: good luck and hope you get it fixed :dance::dance: Si

 

[scooby73]

Confused now with people saying more N and less N, i'll try just the water for a good few days see if they perk up. I know someone who has been getting really good results just using the cubes, first try at the cubes so keeping fingers crossed. The amount of water them airpots lose is unreal but hoping for great results from them too. pain in the arse though having to keep emptying the tray every time you feed them.

 

[Duck Commander]

Confused now with people saying more N and less N, i'll try just the water for a good few days see if they perk up. I know someone who has been getting really good results just using the cubes, first try at the cubes so keeping fingers crossed. The amount of water them airpots lose is unreal but hoping for great results from them too. pain in the arse though having to keep emptying the tray every time you feed them.

Differant people do things slightly diferant that was on my :thumbs: still dont understand how you use a 1cm rockwool cube in a 12L airpot