Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
It never did with my systems, the only thing the additives were supposed to do was prevent galvanic corrosion, which they did, or did not, as i've never had any in my systems which use only pre H2O.
water wetters are crap - they are expensive, and don't really do that much for your temps. they do however prevent bacteria growth in your water, which is a good thing. and if you get a UV-reactive or colored water wetter = bonus!