In most setups it's not an issue since the pods
cultivate lower in the tank within the lr
and sand and the UV
is typically taking water from the surface. If pods
enter the UV
they won't make it though.
Do you still have your green mandarin?
decrease/increase in cycles and some months it seems like they are EVERYWHERE and others I have to go looking for them at night. If you still have the mandarin then you will need to make sure you still have pods
unless it's one of the few that takes frozen.