Every once in a while I discover little DIY projects accidentally, just like this morning. I am a member of several cichlid Facebook groups and saw a great idea from Facebook user Duke Ciry at Cichlid Conversations.
Lots of folks use egg crate in their tanks, from lining the tank bottom for holding rocks to serving as tank partitions. Egg crate is actually louvered light diffuser than you can pick up at your hardware store. PLASKOLITE is one brand name.
Duke took the partition usage to another level. Rather than just sectioning off part of the tank, he made an egg crate cage to segregate an aggressive Lake Malawi peacock. It appears he used zip ties to hold the cut crate sections together. Nice idea!