Dirt Tank- bubbling through sand?
I set up my first dirt tank a few weeks ago with miracle grow, clay and topped it with 1/5 inches of black diamond blasting sand. still doing water changes to reduce the tannins, tank is getting pretty clear now.
I seem to be seeing alot of bubbles comming up through the sand. 1 or 2 bubbles every 5-10 secs maybe.
What is happening with the dirt, and should I be worried? I have not added any fish yet, just 1 mystery snail who has been in there since the 2nd week after setup.