Received the Amazonia Light and decided to keep it.
After soaking for 3 days it had .50 Ammonia Was flushed with bathtub moderately running water to rinse well for at least 5 min and gently lifted to get it mixed.
After a 6 days it has a reading of .50 Ammonia
Here are some pics
Amazonia Color Blacker pellets - Amazonia Light Color lighter one
Size of pellets next to a USA quarter [0.955 inches / 24.26 mm]
After sitting for a few days in the bucket
Tested after the few days of initially sitting, no bubbler or stirring.
After being rinsed and sitting five more days, it is a little darker but right around the .50 or a little more but not the next color.
Rinsing again in the tub for around 5 min. gently lifting the substrate up to mix/rinse.
It is a little firm when dry pellets like the pictures, but pretty easily mushed to a bit of silty mud when pressed between the fingers.