Check out PimpRig’s review of the Thermaltake Aquabay M3 5.25″ Reservoir.  Made of translucent blue Polyethylene, this reservoir will look good in a modded case, and you won’t need to worry about it cracking over time.
“I’m one of those people that likes a reservoir over a T-line, yet I’ve never really cared for the thought of a plexiglas reservoir inside my case. Plexi ages, plexi cracks…plexi leaks. Plexi bad. The latest batch of bay reservoirs to hit the market are constructed of a high density Polyethylene, a material known for its chemical resistance and durability.”

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