[JSimmons]

My cooling loops are comprised of the following parts in a Mountain Mods UFO2 case:

DD TDX, BIX, D4, 1/2-inch Tygon tubing
DD Maze4, BIX, D4, 1/20-inch Tygon tubing

Well, last weekend I heard funny noises coming from one f my D4 pumps, looked down at the temperature display, and noticed that my CPU temp was 6C above what it normally was, so I opened the case. Imagine my horror at finding out that the cooling solution (water/antifreeze) was almost completely gone from the loop. The pump was running, but wasn't pushing any water.

I immediately shut the system down and started pulling out components, but nothing was wet. As I dug deeper, I noticed that the tubing on both the GPU and CPU waterbocks was REALLY loose. When I built the system, I chose the white plastic hose clamps - a decision I now regret.

Since anti-freeze doesn't evaporate, and there was no puddle of fluid under the case, I knew it had to still be in the case somewhere. I found the antifreeze laying in the bottom of the case. It doesn't appear to have caused any problem on the motherboard, but I'm replacing everything anyway (what a great reason to upgrade).

I used pliers to tighten the plastic clamps as far as they would go, and that still wasn't enough. I'm changing to stainless steel metal clamps on all fittings.

I think a flow meter would have alerted me to the problem much sooner (or a pump rotation indicator).

I'm replacing the D4 pump with an AquaExtreme 50Z.