Very cool to watch.
I bet your fish thought it was christmas getting tasty little treats ha ha ^_^
Just out interest if any larvae managed to escape in the flow which im guessing alot would as this reason why nature has evolved to let so many go at once correct?
Would they survive/ grow if landed in tight crevices in the rocks ? Like could they eat small detritus in rockwork or would they need to be in seperate tank with low flow and fed a small food like rotifiers/ baby brine shrimp?
Just thought on they would need miniscule shells as they start growing also?