Quote:
Originally Posted by phoenixflames44
My dad picked some up for me. What a stand up guy! My drainage layer looks super thick! I'm a little worried... 
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How big is the tank, and what critters do you have in it? Mine is extremely thick, I wish I had more vertical space because I have WTF's, but they seem very happy as you can probably see from the pictures ;]. It's probably better to be safe than sorry. Your probably not going to want to have to go add more dirt later on once your soil's been covered in moss, and what not.