Any input on this rod for welding aluminum I was told you can use a propane torch or O/A to weld with this rod

got a aluminum water tank and it's not important that it hold high pressure
or that the weld even looks good just needs to fix the seapage it has under about 10 psi was told this rod will work as good as tigging it

has any one used this rod before and how was the outcome of it is it all that they claim??

Thanks for any input on this