Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A nice design, but I'll keep looking

I purchased the 500p-UV to replace an existing filter/UV that sprung a leak in the seal that protected the UV light. The damage was going to cost $150 so I opted for a new unit. This one was a step down from the Oasis unit I had, but Oasis is no longer sold in the US. The problems I had with the Fish Mate were that the unit requires dissasembly for a weekly cleaning while better units only require the turn of a knob to back flush. Also, the 500 in the 500 P-UV means it works for a 500 gallon pond, but only a 350 gal/hour pump. The 1000 P-UV will go to a 650 gal/hour. That was not mentioned in the description. So its going back and I'm looking for a larger unit.