Badly Need Pump Help

[Charlie_Tuna]

I recently purchased a 225 gallon tank c/w 80 gallon sump and pump. The pump is a Little Giant 3-MDQX-SC (1150gph @ 0' head).

It will be facing 4-5' head pressure which I believe will reduce output to about 900gph.

The tank has dual overflows which will each have a Durso and feed a DIY bio-tower into a common sump.

Is this pump strong enough or should I consider a new pump with stronger output?

It has been suggested that just add a second pump. Would that not mean that I would have to throttle back my pump(s) to avoid overwhelming the overflows?

I am new to this sump game and could really use your help. I have posted this issue on other forums and have yet to get a worthwhile response.

Thanks.