I had this unit for some time now, and i always wonder... Why the water flow so quick? It is rated at 50gpd, but i think it's more like 50gph. I had been this way since i bought it, and after i changed the filter, it still flow like this. Its the coralife one. The blue line flows like a monster, and red one just drips reallly really fast. Is the red one the clean line instead??????