Hey guys.... although ive have a octo before i am still kinda new at this and want to make sure i provide a great home. The type of octo is a O. mercatoris. I have a 25 gal tank with a simple power filter and a four chamber canister fillter. I have acouple of concerns, do i REALLY need a protein skimmer, i would find having one redundent because of the size of my tank and the current fillteration system. I have some live rock and i plan to add a good amount of plants. Also what are some ideas for toys that are safe and fun for him. The tank is just finshing up it's cycles and i want to make sure everything is gravy.