I think that's where the turbos come into play. I would guess they can't eat the larger bubble algae so that needs manual removal. But the turbos come eating the day lights out of the spores, small up and coming bubble algae. You can see each bubble popping in my video link I posted as the Dej sailfin eats it. I can't find any bubble algae in my display but sump and overflows is packed full of the healthiest, most tightly packed bubble algae colonys you ever seen. I think it's great nutrient export thousands of spores pop as I take it out with my hands. I don't doubt it spreads spores popping them but it's better to get rid of it than sit around and worry about it.