[Emerica88]

I want to add some hills to my scape to add depth but wanted to know if ECO will hold the splopes?

 

[pandapr]

this might give you some ideas

http://www.plantedtank.net/forums/aquascaping/85790-suggestions-aggressive-slopes-3.html

 

[elihanover]

It does, but I use large rocks to support it. Amano says to use rocks to hide your intentions or some such.