Substrate depth

**Kodgeman** · 01-04-2011, 05:02 PM

Is there a recommended minimum depth for gravel in a tank?

I currently have 1.5-2" at the front, 2.5-3" at the back of my planted 10 gallon. When I set up the new 37 gallon I'll need more gravel, but I am wondering if I need 3". Would 1 - 2" across the tank be OK? Plants are annubias and java fern, roots do extend into the gravel, but as the plants are mostly on rock or wood, I don't think I need much depth...

Thanks!

**Brhino** · 01-04-2011, 05:04 PM

with just those plants, you should be fine with whatever substrate depth you want.

**chrisfraser05** · 01-04-2011, 06:10 PM

as above, with those plants you'd get away with even 1"

**Dave66** · 01-04-2011, 06:23 PM

It really depends on what plants you wish to keep in your upcoming 37 the depth and quality of substrate necessary. Heavy root feeders like the sword plants need a fine, iron rich substrate at least four inches deep. Epiphyte plants like the aforementioned anubis and Java moss don't need much or any substrate at all, as said.

Dave