http://forums.procooling.com/vbb/showthread.php?t=11584
read the last few
Should also be reviews up soon, I sent a bunch to reviewers two weeks ago.
We have a submersible version, even on stock units maybe fine, as the motor compartment is filled with thermo potting compound.
The review units are not, as we did a special run so they could have some chance of taking the unit apart. Even without compound, there still very hard to dis-assemble.