Our Tractor Supply has Safe-T-Sorb!
I too found that I couldn't keep the BBA off of my Flourite either! It was the Original type. I had it for 6+ years, but it now is in my Flower Beds and will get tilled into the soil this spring! At first it was OK, but I QUICKLY found out it wasn't what the advertising said it was AT ALL! The early advertising said it had it all! No ferts needed etc.! The ONLY REASON I kept it for soo long was after spending almost $200 on it, I couldn't stand to throw it out!!! I am CHEAP about some things!
I have now gone to Miracle Grow Organic Potting Soil and Black Diamond "sand", and I am very satisfied so far!!! I will probably go with another type of sand next time, but as of right now i am LOVING the MGOPS as a base!!! PLANTS are loving it!!!
I can't wait to see what Ya do to the tank!
Keep up the good work!!!