Hey there! I am setting up my 75g today! I am seeding it with the contents (except water) from my 29 g. We decided to take back the canister filter we had for the time being and put that money towards a good skimmer for my saltwater tank and use the saltwater tanks hob filters on my 75g. Anyway, I am going to have 2 hob filter on my 75..a cascade 300 and a cascade 200. I will have about 10 live plants in there a huge driftwood and so on. My question is in all my tanks I usually have an air stone I am not a fan of them but do it of course to give fishies a well oxyginated home. With 2 hob creating surface movement will I need an air stone or will that movement be enough?