Description – Maintaining a healthy, happy aquarium doesn’t have to be labor intensive with Lees® Ultimate Gravel Vac® the job just became easier. – The Ultimate GravelVac® attaches directly to most faucets and the 25′ hose allows water to drain directly into the sink and refill is a breeze. – Attach it directly to most faucets. Use the faucet adapter if necessary. – Drain the dirty water right into the sink and refill the aquarium with ease. – No more need for heavy, messy, unwieldy buckets! – Water changes refresh your aquarium with precious nutrients and remove excess debris/fish waste, uneaten food and decomposed plant matter. – Twenty-five percent water changes should be performed at least once a month in order to maintain a healthy aquatic environment