Action 5: The siphon will draw up scaled-down gravel particles and sand that should still be useful into the aquarium. Sift these through the dirty h2o, clear them, and replace them if the tank is cleaned adequately. Following, clean out the filter substance, introducing new bio sponges or filter substrate. https://petstoreonline00998.qowap.com/96147187/aquarium-cleaning-no-further-a-mystery