My experience has not been that using GFO likely leads to dinos.... that is just my experience though, and I've used a lot of it over the last year.
I've also used Lanthanum in to a filter sock to try and mitigate tang risk, never lost a tang, but I found using LC to be finicky.
I've also used Lanthanum in to a filter sock to try and mitigate tang risk, never lost a tang, but I found using LC to be finicky.
