So... i have a 'scratch' 120 and i added some new fishes (1.5 inch Orinocodoras eigenmanni) and the inhabitants that had been there for 18+ months came down with white spot disease (ick or similar); my question is when i use the python on the aquarium and then rinse it out and let it dry out till the next water change can the ick (or similar parasite) live in cyst form until the next usage (i.e, cross contamination) ?