New Grower autocob lighting help.

[Larry Live]

Hello everyone, Hope everyone is well.

Ok so here is my auto Bloody Skunk from sweet seeds.
She is just 5 days old.
She is in a 3gallon smart pot with coco and just a small amount of perlite.
I am growing her under a single 3500k autocob from cobshop.net
I have the light 28 inches from the seedling on 18/6.
I have been feeding her 5ml of water with 2 grams of mega crop nutrients.
I am seeing some yellow on her 1st set of leaves.
So is the light to close or to far away?
I am not giving her enough water?
Is the mega crop at 2 grams per gallon too mush food right now?

Here are some pictures, so you give me your opinion on what you think.

 

[Mañ'O'Green]

Did you condition the Coco? What is the PH of the MegaCrop fertigation and do you mean 5 liters to 2 grams?

 

[Larry Live]

Yes i conditioned the coco.
The ph is 5.8 with my tap water.
I was watering 5ml of water/feed. The feed mix was 2 grams of mega crop to 1 gallon of water. The seedling was just a few days old. I did not want to over water her.

 

[Mañ'O'Green]

Yes i conditioned the coco.
The ph is 5.8 with my tap water.
I was watering 5ml of water/feed. The feed mix was 2 grams of mega crop to 1 gallon of water. The seedling was just a few days old. I did not want to over water her.

Ok that sounds good. It is important to keep the coco hydrated. If you do not it may become hydrophobic so in that regard you want to water the entire pot when you do water and do it to about 15% run-off. one of the advantages to using coco is that it drains well in fact too well. Hence the perlite to hold water longer. Roots grow rapidly and will fill the pot faster than you think but they will only grow toward water; another reason to water the entire pot but only when needed. Most growers I know and myself use the heft method of determining when to water. Lift a pot of well watered coco, your mix and size. Then lift the pot with your plant, when the plant pot weighs about 40% of the fully wet pot water it. It takes practice.

If your coco ever gets too dry and won't re-hydrate try adding some Yucca powder to your fertigation. It is a natural wetting agent. I use it in rock wool to promote capillary action.

 

[Larry Live]

So i should water the whole pot till i get runoff even with a 6 day old seedling thats in a 3 gallon smart pot? I thought too much water at that early age would drown her.

 

[Mañ'O'Green]

So i should water the whole pot till i get runoff even with a 6 day old seedling thats in a 3 gallon smart pot? I thought too much water at that early age would drown her.

That will not happen in coco unless you are watering too frequently and keeping it soggy.

 

[Larry Live]

That will not happen in coco unless you are watering too frequently and keeping it soggy.

Ok thank you for the reply.

 

[AutoWonders]

So i should water the whole pot till i get runoff even with a 6 day old seedling thats in a 3 gallon smart pot?

I water my coco pots to run off, then plant germed seeds 3 or so hours later.

 

[Larry Live]

I water my coco pots to run off, then plant germed seeds 3 or so hours later.

Thank you for the reply.
So do you know how close my autocob light should be?

 

[AutoWonders]

Thank you for the reply.
So do you know how close my autocob light should be?

28" is fine for an Autocob. I start at 30-32" or there about's and let the plant grow to the light. I roll down slowly. When you lower your light, just keep a sharp eye out for stretch and canoe leaves etc. I probably average in the neighbohood of 18" while in flower, but have gone lower on some strains. Good luck.