is this safe?
I just upgraded my blueys tank and I am building a DIY background and im nervous about how safe it is because I followed a lot of tutorials but still skeptical
Initially I covered the back with aquarium silicone and then expanding foam specifically the one by great stuff and just covered that with soil and moss before it dried so im just worried about mold and how safe it actually is, im still building it so my bluey is not in there yet