Yeah the sand is normal and why we have the spin down pre-filter. A couple years ago I ripped out all the copper and other metal plumbing in the house other than this one area by the pressure tank. As you can see in the photo of the filters, everything from them on is PEX now.Might be that rubber hose is breaking down on the inside and the fiber comes from it? Never saw man made fiber come out of a well in my life? Lots of sand, red iron bacteria, sulfur smell and dirt. The pressure gauge can get stuck and clogged up. Rust from the metal fittings will happen over time on reason I like Schedule 40 PVC/CPVC for my plumbing.
It is possible that rubber hose is the source. I would imagine it has fibers like that. If it is, the hose is at risk of blowing out. I imagine I should replace it either way. I will have to look and see if I have any 1" PEX left over from the last project. I just find it confusing as to where it is coming from. I can't think of anything like that coming from the pump or anything in the well.
It is possible but I didn't think a bladder would have all those fibers. I always thought of it as little more than a rubber liner. We had a bladder rupture before I can drain everything again and see if I get water out of the schrader valve. That is the normal test for a ruptured bladder. The only reason I don't think it is that is that if I run the pump for a while, which I did when I was testing the pressure switch, I get a lot of water out of it. It maintains pressure until the tank is empty and I know it is because it moves easily. When my last tank ruptured I was getting a short cycling of the well pump and it was completely waterlogged.Are you sure the bladder in the pressure tank didn't burst? If there is nothing between the well pump and that (there usually isn't), then man-made fibers can only come from the either well pump or the tank.
Or maybe the drillers lost a tee-shirt down the well?
Yeah I should check the pressure again but I need to drain the tank first. I had installed this tank a few years back and set it to 38psi due to the 40/60 switch. I just filled it up again. Being I have filled and drained it a few times today and it is getting late I think I will wait a day. I want to let our septic system catch up as I have been running a lot of water down the drain.I suspect it might be the bladder as well, I hope so otherwise I would worry it is the pump impeller but if it was that I would think the check valve at the top of the pump would leak back.
Perhaps you know but the pressure tank should be pressurized to 2 psi below the kick in setting on the switch. In your case 38 psi. It is easy to check for the bladder, just unhook the pipe to the tank and put air to the bladder. If it leaks down it has failed, just like an inner tube.
I wish you the best.