Hello, I bought last week a 4 stage RO system from Aquatic life RO buddie. It was doing well last week producing around 24 gpd "gallons per day" but after a week it can only produce 6 gpd. What the heck?! the thing is brand new. I flushed it by unplugging the waste water section and still the flow is tooo slow. Anyone here have the same problem with Ro buddie?