switched from Fluval 106 to a Fluval G3 canister and i switched everything over except for my bag of chemi-pure that was almost a year old and filter floss that i needed to replace so. I am runnning seachem matrix, purigen, cuprisorb and some fluval bio media temporarily while i wait for my matrix carbon and phosguard, and G3 fine pre-filter to come in the mail
my parameters are
ammonia 0 ppm
nitrite 0 ppm
i suspect it was the fluval bio-media since i didnt wash it or the fact that I dont have carbon running while i wait for it to come in the mail.