Lettuce nudies are pretty plentyfull especially in Florida because they are collected here. But as with anything slimy and small, watch them before they go down your overflows. Best way, IME, is to physically remove it and be done with it before it spreads. Lettuce nudies do eat the algae but once the algae is gone, they tend to die off and bryopsis has a chance to come right back because they dont totally eat it 100%