What r these dots??

[Bongojaz]

I transplanted my 2 girls from 2 gal pots to 5 gal pots about 3 days ago, into a wet mixture of ocean forest and perlite.

prewatering the medium is the only way i transplant, and it works great! if you transplant into dry medium, when you do water it, it collapses in on itself and you end up with dry pockets in the mix, and have to add more medium. it has to be watered anyway so what better time?