FritzZyme TurboStart 700
It works !! I’ll use it every time!!!
My cycle was stalled out on nitrite and still showing a fair amount of ammonia using stability. Added this, one day later ammonia zero and nitrite halved, next day cycle finished and no issues.
Cycled a 5 gallon bucket in a week. Thought it went bad because it had a slightly sulphuric smell, but apparently that's normal! Make sure to follow the instructions and keep the leftover in the fridge. This also doesn't have a long shelf life, so make sure you plan on using it all within a few months of purchase.
I purchased TurboStart 700 in order to fulling cycle a 15-gallon fresh water tank. I had used Stability and the tank was slowly cycling. However, I treated the tank as soon as the TurboStart arrived and five days later, the tank was fully cycled. Love the product and plan to buy more. Well worth it.
Appears to have worked great. Tank looking good so far.