emerald crab
... that the emerald crab can be used to control bubble algae in reef aquaria?
... that the <b id="mwCzc"><a href="./Mithraculus_sculptus" id="mwCzg" rel="mw:WikiLink" title="Mithraculus sculptus">emerald crab</a></b> can be used to control <a href="./Valonia_ventricosa" id="mwCzk" rel="mw:WikiLink" title="Valonia ventricosa">bubble algae</a> in <a href="./Reef_aquarium" id="mwCzo" rel="mw:WikiLink" title="Reef aquarium">reef aquaria</a>?