Grounding probe!

[reefburnaby]

Stainless comes in many grades. The stainless used in screw heads on Mags and shafts in powerheads are usually no. 316. 316 is more resistant to saltwater environments and they tend to last a couple of years if they are always submerged in low oxgen areas. If they are exposed to air and saltwater...they will rust very quickly. Eventually, all stainless will corrode in saltwater -- it is just a matter of how long.

I agree with Bard, it is a DIY project that may cost more the real McCoy.

As for the Titanium spoke thingy...I don't think that saleperson knows what they are talking about. The big thing about titanium bike parts is that they are just as strong as steel, but they weight half as much.

As for ground probe or not. Ground probes only work if you use it with a GFCI. GFCIs only work with devices that have a ground prong or grounded surface. So...if you have a powerhead with a two prong AC connector and you are not using a ground probe, then the GFCI will no protect you from the powerhead.

- Victor.