I see some stunted growth on these seedlings, they are around a week old and some have not evn opened cotyledons and I see some black rotting at tip of a seedling which had first set of true leaves emerging, is it fine or should i worry?
Temp:- 17-24 degrees celsius
Rh:- 60-72
Watering:- watered when planted, light spraying around 2 times a day as i am using heat mats
Look ok to me. Only thing to add imo is more light. Little leggy to start.
Agreed ^^^ drop your light about 20 inches above your seedlings to help control the stretch
They’re stretching for more light Growmie. What light are you using? Next go round use solo cups a little over 1/2 full so you can add medium around the tiny stem for support. The 4 older seedlings below are under a fluorescent T5 and I’ve added medium once to bury them a little more 
I’m with them 
Need to lower or turn up the power of your light. You could use some Woden skewers to help keep them from falling over. And @OGIncognito ’s solo cup is the way I grow. Put a clear solo cup inside a colored solo cup. Then you can monitor the root development too. 
Left seedling supported by wire (green).
or
When “up-potting” or as mentioned above (half solo cup) “re-fill” of soil for seedling support, seedling can be buried up to round leaf pair (cotyledons, first pair leaves above soil on seedling).
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Drop that to a few inches above the canopy Growmie. I run a T5HO fixture about 4” above the seedlings
Wow that’s lookin fast, like mine at 14d so double mine. With house lamps 8 - 12" away.
@escobarforever I think we both could use better light.
And your soil looks like mud its way too wet. Less water more light
@Jaysittinback Ya they grew really fast. Just harvested one of them at 12oz,6g. Got a journal on here with a weekly update. Once a week on same day, so im certain of there age. Called poseidons gdp run if you wanted to check it out. Chopping another sunday, a bit smaller tho.
Measuring your plant for comparing to others is not a good use of time.
All grow environments are different and all plants grow differently.
I am lucky when seedlings survive my mistreatments, but they do.
Not a male is a good goal and flowering female that clone is winner winner, Imgrow
@Jaysittinback @Poseidon1 @DEEPDIVERDAVE i am using TLO growing Rev’s recipe which i have used in my early successful grow and here it is and this soil was used earlier this year and it was lying around so i used it.
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What are your temps? Are you using a humidity dome? I leave my seedling in 24 hr light for at least 2 weeks
