Which unit would be best for moderate stocked 525 or 625 XL. I am going to upgrade current (425) tank soon and trying to get all my equipment ready. Recommendations in size for the 500 look like at 130 gallons is right on the edge for 525 and a little under for 625 but the 1200 Reefmat seems way too big? 8-10 moderate size fish (Mostly tangs). no fuge or scrubber as been dosing 5ml Nopox daily for months and all been good. Thought it might be slower using fleece and will have the room but dang that 1200 takes up a lot! Thoughts from the experts?