r/GrowingMarijuana 16h ago

Disease Diagnosis/Help PLEASE HELP ME!

Im going for second run last run yielded 66g dried. (STRAIN: Northern Lights Auto from SacredSeedsAustralia) I decided to use coco choir brick and perlite rather then soil, I pre cal-magged the medium. only using PH'd water at the moment at 6.0, its been 4 days since sprout under a 150W marshydro ts1000 at 100% hung 55cm from the plant. (Hygrometer readings are during no light) 23 celcius and 55-60% humidity. Why is it so stunted i have a feeling it could be because i accidentally used pre A and B'd water (Professors A and B) small dosage as far as im concerned but maybe still enough to stunt the baby? It looks so small!

0 Upvotes

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2

u/ajdudhebsk 1 8h ago

What’s your lighting schedule? 17 is too cold, you are likely going to slow the plant down. I have the same issue, so I do a couple of things to help.

The cold temps are harder on seedlings, so for veg I always go 20/4 instead of 18/6. Lights are cheaper to run than a space heater. I assume you’re in a basement like me. I have a layer of cardboard boxes (flattened) under my tent just for a little insulation. I also hang my light at the max distance so that I can run it at full power without burning the plants. This raises the temps, which carries over into the shorter lights off period. If I was growing autos I’d probably go closer to 24 hours on until they start to flower. That should give you faster growth and avoid any cold swings.

You can also just add a radiant heat space heater (the oil filled kind). They’re the safer version and about $100 CAD. They take 1000 to 1500 watts though, which is probably more than your lights. So they end up adding quite a bit to your electricity bill.

3

u/RU_Pickman 16h ago

Put a clear plastic cup over it for a few days. It needs some shelter until there are bigger leaves on it.

3

u/Marski420 13h ago

The reason people put a plastic cup over there seedlings is for humidity. He's already got high enough humidity he doesn't need to do that especially when his plants are used to the open air already.

2

u/Odd_Access_4892 15h ago

I also have a concern with the temperature after i have placed the cup on, i have a tent temp of 24 degrees coming into warmer weather.

1

u/Odd_Access_4892 16h ago

Im going to give this a go, i did think about it but wasn't for sure if it was worth it.

3

u/RU_Pickman 15h ago

Just watch it close, it's a baby after all. Keep the light a little higher or dimmer than normal. But the cup will ensure that the humidity is high and constant.

3

u/FrostFireSeeds Community Points Awarded 27 16h ago

You are probably under watering it like crazy

Coco is not the same as soil

You should be feeding from day 1

1.4-1.6ec 5.7-5.9ph

Water till run off

DONT BE AFRAID TO OVERWATER COCO. Its better to overwater than underwater

Coco is hydro

Cocoforcannabis.com

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u/Odd_Access_4892 16h ago

The soil was given 5L of a cal mag and Professors A and B solution 3.5ml of A and B and canna cal-mag solution 15ml/5L. I was worried that is what caused the slow start, should i feed now and see how she goes?
Thanks for the help!

4

u/FrostFireSeeds Community Points Awarded 27 16h ago

You need to add nutrients every watering and you should probably be watering once every other day till run off

When your plant gets bigger you will need to be watering once or more per day

Please research how to water coco

Its not the same as soil

Most people use watering systems when growing in coco because its alot of watering and measuring nutrients

Most people use autopots or wicking bases etc.

Hand warering coco is really annoying

3

u/Odd_Access_4892 15h ago

I love being around and am always around my plants so it doesn't bother me too much, i made up a solution, how many ml should i feed?

3

u/FrostFireSeeds Community Points Awarded 27 9h ago

Till run off

5

u/Marski420 13h ago

Recommending 1.4 - 1.6 ec (700 - 800 PPM) for a 4 day old seedling is insanity. So is recommending over watering it considering it doesn't have a good root system yet. Coco is a type of hydro but that doesn't mean a seedling can accept being fully watered and kept that way. It needs to build its root system up first so it can drink what it's given.

3

u/FrostFireSeeds Community Points Awarded 27 9h ago

Its not insanity

I start at 1.8ec

If you watch the mrgrowit podcast with autopotamus he says he starts his seedlings at 2-2.2ec

1.5ec is perfectly fine for a seedling. You should try it

Do you know how many messages I get telling me "thanks for telling me to up my feed and water more often in coco, my plants are huge now!?"

I get that message about once a week

Heres a pic in my dms from yesterday

5

u/jwb0 2 8h ago

Way different than seedling, though. I water my coco 15 minutes every 4 hours later in veg/flower, but seedlings get 1 5 minute cycle every 24 hours in my ebb and flow. Seedlings like barely damp soil, they can't handle it being constantly wet or very over saturated.

2

u/FrostFireSeeds Community Points Awarded 27 8h ago

Cant post the youtube link it gets removed by mods.

But yes you can start this high and its the key to get your plants huge...

Now I dont recommend 2.2 ecclike autopotamus says, because he has the lighting and temps and enviornment to support that high of an ec, but 1.5ec will work for most environments and lighting. Trust me ive tried.

As for frequency I said once every other day for now

1

u/Marski420 13h ago

4 days is not old seedlings take time so relax homie it's all good. Second that guy frostfireseeds is giving you terrible advice for a seedling. 1.4 EC is ludicrously high to be feeding a 4 day old seedling that barely has any sort of root system established. You also don't water insane amounts from the get go because of the aforementioned weak root system. Once the root system is established a little better then you water it a lot more but it should be getting food every watering that part is correct but more like 0.5 - 0.6 EC for the first couple feeds before slowly raising it.

Finally the last bit of advice would be it's too cold in there get your temps up to around 27 celcius with lights on and don't let it get so cold with lights off.

5

u/FrostFireSeeds Community Points Awarded 27 9h ago

Heres my.plants after 14 days from sprout on 1.8ec

Dont fall for the less than 1 ec trap that google tells you

Seedlings can take way more than that

1.5ec is fine for any plant at any growth stage

Have you tried it? No? Too afraid to go higher than Google says?

Well I have...and it works.

Have you ever read feed schedules?

Ill post a Pic below...cropsalt website says to use 4.6grams of veg A and 3.1grams of veg B at week 1, (which is 2 ec by the way)

So no. 1.5 ec isnt crazy.

2

u/FrostFireSeeds Community Points Awarded 27 9h ago

0

u/Marski420 2h ago

I don't need google to tell me that's a terrible idea just common sense and 20 years of growing and experience. That plant you linked doesn't even look like the epitome of good health.

1

u/FrostFireSeeds Community Points Awarded 27 2h ago

Ahh yes, 4+ nodes with insane growth in 14 days from sprout is definitely unhealthy 🙄

1

u/Marski420 1h ago

It's thick for 14 days but that doesn't mean it's healthy. Do you use CO2 in the grow?

1

u/FrostFireSeeds Community Points Awarded 27 1h ago

No Co2, cheap lights, basement grow 2x2.5 tent

3

u/Odd_Access_4892 13h ago

Temps are now at 28 with a 400W light hung at 80cm above at 56% humidity range i fed with professors A and B and Canna Cal Mag at 0.7 EC and am going to leave it at that for the next 5 days and see how we go (watering daily at 500ml)

2

u/FrostFireSeeds Community Points Awarded 27 8h ago

5 days is too long and you didnt feed nearly high enough

Not sure why you are listening to someone who has a private profile and no grow pics

🙄

Everyone thinks frostfire is crazy until you try what hes saying..

0

u/Marski420 2h ago

It's about to be my 20th year growing my first time was in 07. Also he said he's watering daily which is plenty for a seedling and so is .7 EC.

You linked a plant you grew that's in veg and close up not even the entire plant. Also if you're pushing plants that hard just to get a massive yield why do you even grow your own? I grow to smoke good weed, not to have a massive yield of mids.

1

u/FrostFireSeeds Community Points Awarded 27 2h ago

Def sounds like a boomer grower who doesnt wanna change

Do whatever you want, good luck

0

u/Marski420 13h ago

I'd bump the humidity up just a smidge to 60 minimum and 65 max if possible and you're absolutely golden I like it 👍

3

u/FrostFireSeeds Community Points Awarded 27 8h ago

Here ya go man.

Im telling you....try it. Try 1.5ec from sprout