Hello, We are getting a new to us 90 gallon tank this weekend, yippee! It does come with a Rena Filstar canister filter (not sure exactly which size, but it looked to be possibly a large?). We are thinking about getting new filtration for the tank. We’ve only had small tanks before, so I’m only familiar with HOBs. I would love to try the Fluval FX4, but it’s quite pricey. My husband is hoping we can do two Aquaclear 110s instead. I’m a bit worried with the depth of the tank, that HOBs won’t be as effective? What do you think? What are the pros and cons?