Ok ... I dropped in late in the game with this thread , but after reading the FRANTIC start with these plants , i had to add my 2 ¢.
For next time :
Seedlings need NOTHING but a lightly damp soil.
Ditch the distilled water. Run TAP in the early stage.
( your plants growing outside GROW on tap right ? )
I MIST only ( seedling ) as not to drown the damn thing.
If using a premium soil - LET THAT FEED YOUR SEEDLING
Don't FEED SHIT to a fragile new seedling , it has to get accustomed to its medium without DUMPING MORE additives on it.
I use Light Warrior Seed Starter - to start plants.
View attachment 3637636 View attachment 3637637
Since you do the Solo Cup way - Just add soil - premoist soil lightly - plant germed seed. Not rocket science
Once i move ( transplant ) into bagged premium soil , I STILL dont feed shit until Week 5 ! By then you either flipped light schedule or preflowers show ( if an auto plant ) - Then i start the feeding Usually Bloom start. You would be surprised how well a plant would grow WITHOUT a lot of OVERCARE.
Overwatering seedlings can create a Damp Off condition where the seedling dies , and its taproot looks like a shriveled string.
A premium Bagged soil can carry a young plant All by itself with just watering.
The soil will exhaust itself as plant absorbs "what it wants " not necessarily what YOU THINK IT NEEDS.
KISS METHOD comes into play here : Keep it Simple Stupid .
View attachment 3637649 Light warrior mix
View attachment 3637651 ( solo cup transplant with Light Warrior plug )
Example of watering during Early Stage : ( different plant )
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Note : if plant SHOWS any burns With just water - Soil choice may be too hot.