I set up relays to run the power for whatever it is I need through it. I use relays with a 110v coil so then I can plug that into a controller without overloading the amp rating of the controller. Relays require some electrical no how to set up or a friend that has that kinda knowledge base. but once they are set up you'll be stoked.
For you situation: I'd buy a 2ft x 2 ft x 1/2inch pressed board. paint it with anti microbial paint (white). buy a power box at homedepot or like place. mount the thing to the board. then set up independant beakers for each set of devices ie:lights, fans, pumps... Then put relays on to the heavy amp devices with the 110v coil so these are mainline powered but are switch on/off able from a controller or timer without risk of burning the timer/controller out from the constant on off of the high amperage. your relay should be rated specifically (or more) for what your controlling. connect everything or have an electrician do this lolol I do this part my self even though i'm no electrician. I've even shock my self with a 100amp 220v line before
screamed like a little girl. was a real learning experience for me. oh yeah this thing is your custom built "power adapter" you'll want to install a plug rated for the draw your op is taking and install again a rated power line coming out of this "custom adapter" that matches the rated plug. and yes they do make 40, 60, 100 amp plugs with specialty looking adapter for plugging into them. and yes they can be bought at most hardware stores or ordered for you.