Hello, currently using EK cryofuel Solid Neon Green. I’ve used this particular coolant many times in the past and never had this issue before. The EK reservoir/pump combo are brand new and so is the GPU block. I have EK ZMT soft tubing connecting the rad to the inlet n outlet on the bottom of the res, the tube going to the GPU is Bitspower PETG. I mentioned the soft tubing because I did have Plasticizer issues a very long time ago when I stated water cooling but that was using clear tubing or a tubing type other then ZMT which is not suppose to produce plasticizer but you never know. Basically it looks like something separated from the coolant and I can see it’s building up everywhere so it’s definitely a serious issue. Surprisingly my gpu temps are very low but I know it would continue to clog and there is no way I would continue like this regardless. For reference I planned on replacing the ZMT tubing with direct connect fittings anyway so this was more just a mock up. I also felt like it was causing a weird blockage or air bubble that wouldn’t go away when the PC was on but would subside when it shut it off. You can see it in the top left corner of the GPU.