Sand for Fluval Flex 9g
Okay guys, I suck at figuring these things out.
I have a Fluval Flex 9g that is going in my boy's room. It'll be a planted tank with some small Nano fish. I'm trying to figure out how much sand I need to buy for it. I like a "deeper" substrate, not the really thin one, so let's err on the side of more, but how much do you all think?
I bought 15lbs of the Fluval Black Sand and it's already here, how much more do you think I need if any? The bag looks a little small to truly get me a nice deep sand bed.
Thanks in advance!