Remember the old TV show where MacGyver always seems to save the day by solving the problem by improvising and using whatever was available and on hand ??? Anyone who has been in this hobby for a long time knows what I mean. Just today, I lost an o-ring when cleaning my protien skimmer so I had to actually make one to get by with until I could order a new one and wait however long until it takes to arrive. It made me think. With all the critical hardware being used in this hobby sometimes things break and we have to come up with immediate solutiions until we find a permanent one. Let us here your stories !!!