well i think its a pretty good filter, very quiet, but the downside is there is no biowheel, so the bacterial culture will form in the gravel, decor etc etc and everytime you change the filter, the cycle will regenerated but not as long as the first time. The tanks are fine, and everything in it is fine, the heater etc, its just the filter. I would recommenend using a marineland biowheel filter, it really good in creating bacterial culture because it has a biowheel. ok my two cents.