well i have just constucted my first octopus tank. whatcha think? its a 50g tall tank, xp2 canister filter, seaclone 100 skimmer (modified a little), 36 watt uv sterilizer.the top is made out of 2 plastic cutting boards hinged together. i screwed one side to the aquarium and used lag bolts with wingnuts to hold the door shut. i also made a spot for the light to shine threw.i also constructed a surface skimmer for my canister filter out of a breeder box(i made the slits in it as small as i could). no octo yet but i do have a xl domino damsel (this thing has cycled 3 of my setups so far, hes been threw hell and back many times) to cycle the tank. so just tell me if ya see any flaws. tanks, P.S. Do you think i should get a chiller? my tank temp stays at 75.5 degrees all the time.