<https://forum.aquariumcoop.com/topic/11418-perfectly-round-white-spots-on-my-aquarium-glass/#comment-89441>
<http://schema.org/text>
"The major tank cleaning probably triggered them to spawn. They could have spawned before and you just never knew because either they or something else in the tank ate the eggs before you spotted them. \n "
<https://forum.aquariumcoop.com/topic/11418-perfectly-round-white-spots-on-my-aquarium-glass/#comment-89364>