I set my new tank up with colombia flora base. The pH was 5. I actually had to add some tap water to get the pH back up.I'm sure the fluval stuff is fine for the cherry shrimp. I need something that will guarantee a low ph though as i want to try a few Taiwans. I decided on the red bee sand anyway, the next day delivery swung it for me.
I have read that it stops buffering the ph after about a year is this true? My other concern is the people selling it don't use it in their own tanks, do they know something we don't? Have you tried any of the others as a comparison?