NEVER toss a starter out!
Do start another batch.
I've had seeds covered with mold sprout MONTHS after I gave up on them.
Mother Nature rules,sometimes she messes around and things are different.
I grow in up to 4 1/2 in. pots these days.
Cells suck.
Too much hassle not destroying new starts and not causing damage to the start next to it.
I can add more seeds to a starter pot,IF I think I need too.
Murphies Law,once I put new seeds in a pot,I get several starts from the first seeds sprouting like crab grass.
I give away a LOT of starts!
As far as temp. goes,I think 75 degrees is good for Ann. and Bac. , 80 for most anything else-in general.
Supers/Chin. seem to like 90-95 degrees.
10 days is common for FRESH seeds to germinate,in general.
But as I said,I had seeds grow after MONTHS at times.
Mother Nature Rules.