Water is cascaded back in to the tank from your top rated from the filter. You can certainly adjust the stream rate by twisting a knob on top rated. Types of Fish tank filter – a quick overview! Box Filters: The box filter is easy and effective for small aquariums https://petskyonlinedubai29530.theblogfairy.com/36123711/detailed-notes-on-aquarium-care-uae