ROIKETU 12 Pack Transparent Hydroponic Cups with Humidity Domes,Hydroponic Growing System for Seedlings,Seed Starting Cups for Seed Starting,Root Monitoring

Would you say a fine UNS aquasoil + perlite + sphagnum mix would be good for the TC? If so, what ratios do you think? I have some humidity domes that I washed thoroughly and will probably sterilize with a bleach mix. I may need to get new cups or diy something though because they are pretty open and let the aquasoil + perlite fall out. This is the Aquasoil I have, and these are the humidity domes I have.. I also have rapid rooters, but didn't think they would be good for the jewels since they are quite firm and don't think the roots could grow through that.