No drip. Just weekly water change. This tank plus 3 more heavily stocked tank are plumbed together in the total of about 900-gal, filtered with an Ultima 4000 and a Reeflo Dart. 75%-80% of water is flushed weekly, washing the filter at the same time doing water changeWhat kind of maintenance does it take for such a large bio load like this? I guess you have a large drip system in place?