Welcome!
I had my first experience with this ##%$##$R% algae about 4 years ago when I switched from HD kero to Diesel, had no idea it was going to plug the filter in my boomerang XL, I experienced two unexpected flame outs, then like you, I came here to find answers, the guys here help me understand what I was dealing with and pushed me in the right direction to solve my problem ( algaecide ) I now keep using it every time I buy Kero at the pump ( switched to pump Kero right away ) because it also comes from an underground tank, no more flame outs or black stuff in my can or tanks, I now clean the filters in my jets every 6 months just in case, for that I use electronics cleaner plastic safe, you find this can at HD and places like Staples.
Have fun flying your jets and stay safe and algae clean