my new substrates test

[golino]

day 1 :
from the under to the top
layer 1 : peat moss
layer 2 : clay
layer 3 : dirt
layer 4 : chines soil from the Internet
now lets see the photo 🙂

 

[golino]

day 2 :
water clear 70 % i change some of the water last night but today i found this white things on the top chines soil but i dont know what is this do u have any idea i would be thankful