Equipment: 55G SW Tank
58LBS Live Rock
3 inch Sand bed
Bak-Pak 2R+ Skimmer
2 Power Heads #2 Koralia and #3 Koralia
48' Nova Extreme Pro 6x 54 Watts
3x54 watts 10K & 3x54 watts Actinics 460NM
200 Watt Heater.
PinPoint PH Monitor
I think you accidentally posted the wrong link, because rapids mini canisters are garbage.
Besides that, AquaClear HOB's basically are canisters. Only difference is they hang on the side of the tank. Except so does the one you posted. Lol.
Not to mention the AC20 has a larger media capacity and 20gph higher flow rate. (100gph vs. 80 on the rapids can)