Is this my Fault?

Mechanic here! I heard you say FUEL lines. Some fuel lines use STEEL bands to reinforce them. My theory is some of the water was in contact to the fibers in the fuel line UNDER the worm clamp since it prob stretched and exposed the steel in the hose Edit: Alot of people keep saying fuel lines with steel reinforced fibers arent a thing. They are very much a thing but not common on non german vehicles. It is also pretty uncommon to use now a days BUT last time i checked they are half the price as fiber reinforced in autoparts stores. The lines used for the 1 corroded rig look different from the other 4 units.

Im sorry for your loss

Benefit of being Linus' son: cool stuff in the house Drawback of being Linus' son: if the cool stuff breaks, it takes forever to fix

Having a sibling passing so young sucks. I’m sorry for your loss and I hope the memories you have with her will bring you and your family joy and warmth in the times to come.

Electrical engineer here, There must be a ground loop from the pump and server. Even 5-10 volt difference can make it. In the case of pulling thousands of watts from servers, I guarrentee you there was a 10-20 volt difference between neutral wires of the pump and server rack. You need to isolate the pump with 1:1 isolation transformer. And add a sacrificial anode to be safe

Linus son is ridiculously chilled out. Loved the interaction "how'd you get to be so sarcastic"... "bad parenting I guess"... killed me

"I'm the kind of person who honors his promises, so I'm not promising anything." Yeah, I'm stealing that line.

I was taught in materials science about self-galvanic corrosion in metals with different material phases. That's a fancy way of saying there are inconsistencies in the alloy which produce localized galvanic corrosion within the single part. It's a defect in the part, not much you can do about it. Personally I'd go with marine brass or stainless fittings. I also use an anti-corrosion compound on joints (bolts, screws, etc.) Note that iodine is active and corrosive. It does not conduct electricity well, BUT because it is reactive, it can form compounds that do leading to the galvanic corrosion.

The fact Linus lost family member and still has enthusiasm to upload is dedication

Mechanical Engineer here. We design evaporation plants, so you guessed it, a lot of corrosion. I suspect you had an electric potential applied from external instead of chemically. A few Volts is enough to create massive corrosion. Check all the grounding, add more wherever you can. Including water lines.

Having your son involved even when he is probably bored to tears is such a positive step. Thanks for being an awesome dad.

Linus, my father died suddenly about 7 months ago. To put it shortly, I have been a total mess this whole year, and I'm still waiting for whenever it gets better. As a long time fan, it is simply remarkable to see you still up and at it. I hope you have a good support system, whether it be family or friends, and don't be afraid to reach out. In my case, people never felt comfortable reaching out, and I was basically alone with my thoughts for a long time. Please take care. So sorry for your loss.

Linus, I am so sorry for your family’s loss. I have my Master’s in Chemical Engineering. You reference galvanic corrosion, but there are different “types” of corrosion and I think there could be multiple possible causes. 1. “Pitting Corrosion”- Minute imperfections in the zinc coating could have caused localized potential differences which over time became significantly worse. The zinc coating should passivate the brass, but after enough small-scale pitting corrosion, you might see the brass of the fitting involved in the corrosion. The rate and degree of corrosion strongly suggest this type. 2. “Crevice Corrosion”- This could be the corrosion taking place in the GPU block where the corrosion appears to be happening with the non-metal parts of the GPU block. If even a small amount of fluid became trapped (like under a gasket or in very sharp corners), it could induce this type of corrosion. This type of corrosion is slower than pitting, so I do not think this is the root cause, but should still be mentioned. 3. “Selective Corrosion/Leaking”- Potential differences, the driving force behind corrosion, can develop on the same piece of metal/object; you do not need to have two different metals. Essentially, the zinc-coated brass fitting(s) corroded itself. If possible, send the corroded fittings to EK or someone else to have the metal content analyzed. If you’d like to talk further about these, let me know. I have contacts in the material science field who might be able to assist.

Firstly, my sincere condolences. In regards to your system; install a level switch in your reservoir that initiates emergency shutdown and power disconnect when the level goes too low. You can get switches with a little bit of headroom for evaporation but you should top that off anyway. You can also put flex PCB leak detectors sandwiched between the systems.

I am so sorry for your loss. My deepest condolences. I hope you get through these tough times as well as possible.

13:42 Hey Linus, as you asked, anorganic chemistry major here. Even though brass and copper are generally very compatible, it could be that due to minor imperfections and similar debris/metal filings to the control loop a small electrochemical potential formed. Things like slow changes in the pH of the water, biofilm forming and temperature diffrences could be enough to accelerate this process immensely. I would check the metals under a microscope to look for impurities or attacked areas, using a multimeter to check all the isolators, check the pH, add more iodine or other desinfectant agents and lastly check the heat load of the diffrent systems. If the one has been used quite heavingly this could add to the other accelerations. Hope this could help, and i wish the issue gets resolved quickly. And my condolences for your loss of both family and tech.

Sorry to hear about your sister Linus. ❤

Sorry for your sister My prayers go out to you and your family

Sorry to hear about your sister, I lost one to a drunk driver a little over a year ago. Almost lost my dad in January who is my only living parent and now I have to take care of him 24/7, which I don't mind but it keeps me from working.

Love that... "Can we just fix it and dont care about what happened" thats the old linus words coming from his son its poetry