Review on Seachem Ammonia Alert 1 Year Monitor by Laboratories by Vanessa Campbell

I've used this in my 10 gallon saltwater QT and it works great. It actually measures what we care about - ammonia, not total ammonium like in most other test kits, which then has to be converted to ammonia, also taking pH into account. One tip - light from behind to get the exact color. I ended up buying one of these for my recently driven DT in case I had ammonia spikes. Pleasant rest.