i didn't build them, these things are sold in pet shops everywhere here. they come in different sizes from this size up to about half a metre square - they're very nice. they come with lids but i prefer the open look on these.
i just have a halogen desk lamp over them that is marked as 50w, but there's a lot fo
spillage because they're quite high, and wattage lost in heat.
50gal planted - yoyo loaches, BNs, odessa barbs, giant danios
33gal planted - praecox rainbows, gold ram, bolivian rams, sparkling gouramis, licorice gouramis, lots of shrimp
2 x 5gal planted - bettas