You've just found one satisfied owner.I've researched every cannister on the market .This is the first one I've owned and probably will stick to this brand.If your looking for performance,excellent value, and great reviews from many owners,this is your filter. It has all the features of the cadillac of cannisters(Eheim pro series) as they call them.Priming button,media included,no bypass feature.It is a clone but a fraction of the price.The best prices are at superfishstore.com and aquatraders.com When I ordered the 825 at the superfishstore they were out of stock and sent me the 828 for the same cost $59.99!!! The regular cost was $67.99.Here are the specs listed on the box:1200L/P/H or 317G/P/H for tanks 55-125gallons,4 stage(media baskets),uses 25 watts. I spoke to a salesperson on the phone and asked about replacement parts if needed.He assured me if needed there was a huge warehouse of parts.My next choice of filters would have been Filstar.Why waste money on overpriced Eheims?