Juwel structured backgrounds

[rachamy]

Would like to use these in my new tank setup.Has anybody else used them and if so whats the best method to fix them?

 

[aaronnorth]

if it is a planted tank then most people would advise against them as they tend to disrupt flow and algae grows on them quite often, to fix, the best way is to buy some silicone so that no gaps are available for the fish to get stuck behind.