Anyone ever use a tunze wavebox? I have been reading about them. I have become interested because i had plumbed a new closed loop with a scwd but it did not work out. I was using a mag9.5, submerged, but found out when i placed it in the tank that the pump is not sealed well enough.... i got a minor shock. (it never tripped the GFCI). Anyway, i am not going to drop a ton of money on a wavebox, but wondered if i could make one. The wavebox looks very effective. In the mean time, i am going to replumb my closed loop so the pump is not submerged.