Some Titanium heaters DO NOT have a third prong.
I was not aware of that. I will concede that I should have made clearer that I was referring to Won Brother's heaters specifically and not all heaters. I certainly did not intend to speak of a product's effectiveness in this way without knowing for sure.
Now think about the Noob that is reading this thread. Buys a non-grounded Titanium Heater and there is stray voltage in the tank? Fried Noob.
Buys a Grounded WON Titanium Heater and unplugs it for a water change and there is stray voltage in the tank? Fried Noob.
Yes, but that same noob is just as likely to pull the plug to his power strip with a grounding probe plugged into it (I will note at this time that I am referring to grounding probes that use a "dummy" plug that derives the ground from the ground pin of a receptacle), therefore disconnecting it, or any number of other possibilities that leaves him with no protection. While I agree with you that it's a dangerous situation, there has to be some level of responsibility and knowledge on the part of the aquarist. If a noob is using a heater as a grounding probe, then he should know not to unplug it during a water change (instead, turn down the thermostat), just as anyone would reasonably expect him know with a regular grounding probe.
And everyone should be using a GFI with their grounding probe anyway, which would have tripped long before the aqarist stuck their hand into the water. If they have no grounding probe protection, the GFI would simply trip at this time. That is why I always recommend GFIs to be used on tanks, preferably with a grounding probe as well.
Sorry but the only thing I can agree on is that WON POS!! And you are telling people trust your life with POS YOU do not even use any more..
The reasons I think Won Brothers heaters are POS is for entirely different reasons than their inherent grounding abilities. If someone is intent on using them and wants to run the risk that one fails off or fails on and either lets their tank go cold or cooks their fish, that's their choice, but neither scenario affects the ability of the heater to ground the water. There is no circuitry between the grouding prong of the plug and the case of the heater, just wires and solder.
Or are you still using the WONs as ground probes? In that case I apologize in advance.
No I'm not, and before you jump on me I'll reiterate that the only reason I am not is because of the risk of the failure of the heater, not of the grounding functionality. The one tank I have that still runs a Won is relying on the Won as a grounding device.
A Ground probe is only thing you can be sure is grounding your tank.
I agree, but when you consider the fact that most aquarists do not run any kind of grounding at all, I believe that something is better than nothing. If they are going to either buy a glass heater and no grounding probe or buy a [grounded] titanium heater and no grounding probe, it's obviously better to buy the grounded titanium heater.
So I'm sorry if I failed to mention that I was talking of Won units specifically. I see your point on that, and in the past when I have talked about this I referred specifically to them.
However, I do stand by my argument that provided a WON BROTHERS heater is properly connected to the wall socket, it does effect a suitable ground for the tank, and that a newbie who knows nothing about the relationship between having the heater plugged in and having a grounded tank is just as likely to unplug a grounding probe, either on purpose or inadvertently. Therefore, that newbie needs to understand that in order for a grounding probe (in whatever sense of definition) to function properly, it must be connected to a grounded receptacle at all times. This knowledge applies equally and universally to whatever grounding device you are using, be that a heater with a grounded titanium case or a separate grounding probe.