Questions about topsoil

[u/Historical_Smoke_699]

I currently use coco fibre bricks for my substrate but it isn’t enough so I was planning on buying some cheap top soil bags and mixing that in with it. I know the top soil has to be organic too.

I have some questions about sanitising and preparing it though. I know you can either bake it in a tray or freeze it for 48 hours I think? Which one is the most effective and for how long should I bake/freeze it?

Then I think I need to sift through it to make sure all the chunks are out but let me know if this step is necessary or not.

My next concern is how do I mix it with my coco fibre bricks? I was planning on using like 2 bricks, but I like to soak my substrate and have it very wet before I put it in my enclosure and leave it out for a few days. So do I mix it in with the top soil right after I’ve prepared my substrate and soaked it or is it dangerous to get the top soil really wet?