Did you just call me a grasshopper?Well first grasshopper, the grain size of pool filter sand may be ever so slightly more course than fine play sand, but offers nearly perfect permeability for water penetration/circulation (which is why/how it works in the pool filter). My cories have been living large for over 8 years! (btw, there are those that have cories on gravel).
And second, I was cleaning the sand in a 5g bucket outdoors with the hose as I always do.
This:
Does not equal this:
Im kidding! Lol.
I know for a fact that @Deanasue had problem with her sand to...
If you didn’t wash the sand, add the sand to your tank, fill the tank up, and then drain it, you will have problems.