What kind of dirt can I use in an aquarium?
I am rescaping my 10g betta tank. I already have all the supplies- including my top substrate, which is a natural fine gravel- CaribSea. However, I need a nutrient-filled substrate, and preferably inexpensive and pH neutral. I looked around and saw that dirt could be an option. Any input/feedback on that? For plants I have:
I know these are Low-Tech but I am still going to use ferts and the special substrate.