New Grower Drooping leaves and yellowing fan leaves

[Blake Florimo]

Hi, hoping someone can help me troubleshoot.

Indoor, coco grow, under 2 x 600w hps (ballast controlled and each set at 400w)
Using seeds from 420fastbuds and biodiesel nutes.

Quite suddenly at the start of week 5, leaves became droopy and then a few days later the yellowing started.

I know this isnt very detailed but any suggestions as to what might be the cause? Im not sure if its watering too little or too much, a response to excess heat, Nitrogen deficiency or none of the above..? Humidity maybe?

Any help is good help!
Thank you in advance

 

[Garage_Grower]

What size pots? How often and how much do you feed? Straight coco or a mixture?

 

[Blake Florimo]

19L pots, straight coco and about 300ml every day or second day.

Thanks mate

 

[Garage_Grower]

I have some plants going in 5gal pots of coco, and I’m feeding anywhere from 2-4L of feed each plant once a day. Make sure you are watering enough to get about 20% runoff, and they should perk right back up.

 

[Garage_Grower]

These 3 plants will be 5 weeks old this Friday.

 

[the green bandit]

I'm not a plant doc by any means so take my advice with a grain of salt! 300 mls doesn't seem like enough to me buddy....I'd give her a half strength feed of veg nutes with A full dose of cal/mg for a couple of days and see how she responds....looks like you have a few things going on.....are you checking ph?...feeds should be around 5.8 going in if memory serves me right....as garage grower said you should be watering to about 20% runoff every time ......I'm only mid way through my first coco grow and it's a lot different than any soil grow ive done and needs to be treated as such.

 

[HonestGR]

I'm not a plant doc by any means so take my advice with a grain of salt! 300 mls doesn't seem like enough to me buddy....I'd give her a half strength feed of veg nutes with A full dose of cal/mg for a couple of days and see how she responds....looks like you have a few things going on.....are you checking ph?...feeds should be around 5.8 going in if memory serves me right....as garage grower said you should be watering to about 20% runoff every time ......I'm only mid way through my first coco grow and it's a lot different than any soil grow ive done and needs to be treated as such.

I agree, your coco looks really dry. You will want to water more