I guess it was a bad idea. Stacking two egg crates probably will work but need a bigger tank than 5 gallons.
The reason I was thinking about planting vertically is because I ran out of space to plant stuff. I had a relatively big lava rock in the center of the tank and I planted all around it (marsilea crenata, some unknown grass like plant, and several java fern windelov tied to a smaller rock and some just stuck in any space that I have) and one anubias on the big lava rock. So no more space to add plant.
Last edited by VRaverna; 01-25-2018 at 10:29 PM.
Reason: corrected spelling