Possibly a question or an advisory. After going through a 10 pack of ISI brand chargers, I ordered a larger set on Amazon (
http://www.amazon.com/100-Leland-Soda-Chargers-Seltzer/dp/B00304SLAO/ref=pd_sim_k_2) with good reviews. CO2 is CO2, I figured. Anyway, I carbonated a CS juice soda and some plain water, they are both blown out by a really harsh metallic taste. It tastes the same as water left too long in an iron tea kettle. What might be going on here? I found one review citing the same problem, the rest are extremely positive. Am I just overcarbonating with 2 chargers? I've never noticed this kind of taste from a Sodastream or the Isi chargers.