Hi All, I just setup at Sunsun HW-302 in my 20 gallon tank. It's a brand new tank, and my first experience with this brand. On my Penn Plax Cascade, the pressure on the spray bar can be adjusted relatively easily with a valve, on this there is no such valve. Anyway to adjust this spray bar? My 10 neon tetras seemed to be cowering in a corner right now. I have just put one extension instead of two and have it pointing down, as that seems to make it a little less powerful. Any help appreciated.