Hi everyone, been looking at getting an Atlantic pygmy octopus or two for my 75L tank, was set up for fish so has a heater, a filter and a light. Have done quite a bit of research but cant find much info on keeping pygmy octopus. I understand that i will have to octopus proof the lid (might just get rid of the old one as it also seems the octopus don't like bright lights either) and sounds like i need some sort of external filter. so was wondering if that's all i need to make the tank able to house an octopus, but also know i would have to cycle the tank for 3 months. Was also hoping for some help in how to set up the water as in an air filter or not and heard that carbon needs to be added (not sure how that is done). Also wasn't sure with how these octopus should be fed, was planning on feeding them brine shrimp? Thanks for any of your suggestions.