Welcome to TONMO!
I am not an expert, but I'll get us started. I see several warning signs here
You start out by saying, "I am going to get a bimac octopus" but then follow it up with needing soup-to-nuts information about what you need to do that, and wrap it up by saying "I don't want to spend a fortune on this."
If I take you literally, then I would say you should change your outlook to "I am
thinking about getting a bimac" but you need more details to inform your decision.
Basically, the first rule is, don't rush into becoming an octopus owner. It's a long process, and starts with setting up your tank and allowing it to
cycle for several months, before ever adding an octopus. See our articles on
Ceph Care.
As you will see in these articles, you'll want to know your budget also. Suggest you read these articles and peruse our forums (and the Search feature is your friend)! After some study, you'll be in a better position to know whether you're really on board for this journey.
If so - great! We're here for any and all questions along the way, and will be happy to assist in your journey - and learn along with you!
Keep us posted. :smile2: