I currently have an empty fluval flex 15 that i have debated on setting up as a nano reef tank, But im wondering should i use it or sell it and purchase the innovative marine 15? Which one of the 2 do yall think would be better, and why? on one side i already have the fluval flex with an upgraded return pump, but it has the high and low filter intakes, Where the innovative marine has just the one over flow, and my lfs sells the tank for $99 out of yalls experience what do yall think would be best thanks.