DIY Background

[twestacott]

I have seen a number of sites that give instructions on how to make yourself a very cool rock wall background using sheets of styrofoam (the insulation kind) and then painting it with cement and using aquarium silicone to glue it to the back of your tank.

I am just wondering if anyone hear has tried this for the 36 gallon tank and would the styrofoam or cement have any ill effects on the water making it toxic for fish?

 

[jsoong]

Check out the threads in the DIY section of this site. Like this one:
http://www.aquariumadvice.com/forum...round-including-cost-of-materials-173237.html

Cement will leach toxic stuff out into the water, so either need to age (standard method, outdoor in a pond for 1 season) or sealed with epoxy. <Or be paranoid, aged & sealed ....> Properly done, a DIY background is fish safe.