The eclipse is perfect for octos, altho i took out the biowheel and put lr rubble in there, also took out the sponge and carbon adn put a smaller sponge as a prefilter. There is already an opening for cords, so you have to cover that with thick plastic wrap duct taped (you can get it at any hardware store). I just use a regular ebo jagar 50watt heater in the tank. The hood doesnt look like it can be easily moded, by me atleast, but i dont even have basic high school woods class under my belt! Octos generally are more cold water, even the tropical species prefer lower 70's, i keep mine at 75. As for price, it seems around $30-50AMD is about the norm, Im in Canada and the few Ive seen here were about $70CAD. One note: make sure you get a dwarf species, as many need as big as 250g and can get to like 50" arms, these species are sadly more common than you might think too! but the bimac maxes out at about 18" arms, and around 4" head.
heres a few pics of the basic setup:
filter:
back cord hole:
full tank shot:
and just so you know, they arent swimming around all the time, they hide quite a bit, similar to my old snowflake moray, active for maby 3-4 hours daily, mostly around feeding time. Plus they will need live foods at first, and you cannot use feeders cus if the feeders were ever treated with copper you octo WILL die, so you need small shrimp, snails, etc, maby order a invert package from this site? took me about a week to train onto frozen.
But im certainly enjoying my octo experience, amazing creatures for sure!
Jon