It is well documented that the use of an airstone in one's tank will cause any injected CO2 to be dissolved, or gassed off. What of Flourish? As I've mentioned elsewhere, I use good ol' DIY yeast and will supplement Flourish soon. In my fear of having a mass die off, I run an airstone at night, so I got to wondering, given that Flourish is a carbon based fert, would this have an effect on levels? Also, does the use of Flourish affect the readings from a drop-checker?