atmmachine816
Fish Gatherer
You will have about 33x gph at the high settings, I don't know how low you can turn it down but if your not running a skimmer I would think more flow the better. I have almost 30x in my tank with just powerheads plus more with HOB filter and I have no problems so I think you will be fine. I wouldn't worry about the cost, it it's better for you than you want to buy it, best to have the best than not and like ski said they'll save you money on electricity which is a plus.