| CarmieJo..... I have heard some mixed reviews concerning the Tunze 6025's leaning more to the bad side. Many of the reviews are concerning issues where the pumps are too nosiy for the majority of people, issues with the impellor starting in revers about 80% of the time and actually siphoning water then providing flow and some issues concerning the magnet holster. What are the dimensions of your aquarium? It might be in your best interest in decideding to go with a higher end powerhead for flow. I'm personally going to be purchase 2 or 3 EcoTech Marine Vortech's for my 45 gallon cube since they are controllable and will grow with your aquarium needs plus their battery backup and soon to be released wireless controller are too awesome to pass up in my eyes. | 
