Hi everyone. I am a brand new Hot Tub owner. My tub is an Aria by Hot Springs. Anyways, I got this used from my brother-in-law who was moving and the new owners of the home didn't want the tub so I bought it from him. Long story short. My water is ALWAYS cloudy and I am getting these black/very dark brown flakes coming out when I turn the jetts on. I called my local Hot tub store and they said to just put more Chlorine in the tub. I did. Also my pH is balanced, and everything else seems to check out on my test strips. Crazy thing is, I put in the chlorine and it is high for a bit, then goes back down to next to nothing within a day. I think there is something wrong with my tub. I don't think just putting chlorine in is working. I am concerned a bit about the dark stuff coming out of the jets of the tub. I did a bit of research and I think I might have biofilm? Not sure though because my hot tub store told me it is extremely rare to get bacteria in the tub and almost impossible with enough chlorine. I just want to enjoy my tub. Any help or if there are any products out there that you have used that I don't know about that can help. Appreciate your time. Thanks. Joe