The soil mix is new with some perlite mixed InWhat is your soil mix & how wet do you keep it?
What do you mean too much compost...Too much compost?
The wetness is fine, if you squeeze some it just holds together.What is your soil mix & how wet do you keep it?
The soil mix is new with some perlite mixed In
slug pellets, i did at some point notice a fine slug trailRodents? Could be eating the plants.
What are the pellets you had on the soil?
they are in a polytunnel, the temps are around 65,,70 daytime. 9 or 10 C night timeLooks like they're outside (perhaps in something hoop-house like) in the pics. What range of temperatures are they experiencing? They're awfully young for cool temps, which can exacerbate other issues, such as damping off.
the soil is store boughtHate to say this but I would just get some store bought planting soil & replant your seeds.
Remember when you transplant you want a little root bound so you don't shock the seedlings.
Slug bait should never be deployed by the plants you are trying to protect, slug bait draws slugs.slug pellets, i did at some point notice a fine slug trail