{"product_id":"fluval-biological-aquarium-cleaner","title":"Fluval Biological Aquarium Cleaner","description":"\u003cp\u003e\u003cstrong\u003eA weekly top-up that keeps gravel, media and glass from building up waste between full cleans.\u003c\/strong\u003e Fluval Biological Aquarium Cleaner adds a dose of waste-digesting biological activity to the water column, working on the organic debris that settles in gravel, power filter media, ornaments and glass rather than requiring you to scrub it all out by hand. It's sold in 120 mL, 250 mL and 2 L sizes, from a single tank up to a fish room.\u003c\/p\u003e\n\u003ch3\u003eWhy you need one\u003c\/h3\u003e\n\u003cp\u003eAquariums generate more waste between water changes than filtration alone clears — uneaten food, plant debris and fish waste settle into gravel and cling to decorations and filter media. Left alone, it breaks down slowly and can dull the tank's appearance. Biological Aquarium Cleaner is formulated to speed that breakdown along, cutting down on how much manual scrubbing and gravel-vacuuming a tank needs.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargets four zones\u003c\/strong\u003e — gravel bed, power filter media, ornaments and interior glass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekly dosing\u003c\/strong\u003e — designed to be added regularly rather than as an occasional deep clean.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFresh and saltwater safe.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with Cycle Biological Enhancer\u003c\/strong\u003e — Fluval recommends dosing the two together to help manage any ammonia rise as waste breaks down faster.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2 L pump bottle\u003c\/strong\u003e — each pump dispenses 5 mL, useful for larger systems dosing often.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSizes\u003c\/th\u003e\n\u003ctd\u003e120 mL, 250 mL, 2 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003eLiquid, dosed into aquarium water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eFreshwater and saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication areas\u003c\/th\u003e\n\u003ctd\u003eGravel, filter media, ornaments, glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU (120 mL)\u003c\/th\u003e\n\u003ctd\u003eFLS16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU (250 mL)\u003c\/th\u003e\n\u003ctd\u003eFLS17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU (2 L)\u003c\/th\u003e\n\u003ctd\u003eFLS19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDosage and directions\u003c\/h3\u003e\n\u003cp\u003eFluval recommends dosing at least weekly for ongoing maintenance. During a partial water change, dose for at least the volume of water changed. Fluval doesn't publish a fixed millilitre-per-litre ratio for this product and states it can't be overdosed, so err on the generous side rather than measuring precisely. The 2 L bottle dispenses in 5 mL pumps, which makes repeat dosing on a larger system quicker to measure out.\u003c\/p\u003e\n\u003cp\u003eFluval hasn't published a specific ingredient or active-constituent breakdown for this product — check the bottle for the current formulation if that detail matters for your setup.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for established freshwater and saltwater aquariums as a routine maintenance dose. Not a substitute for water changes or gravel vacuuming, and not intended as a spot treatment for an existing ammonia or nitrite spike — for that, a partial water change is the faster fix.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cp\u003eFluval Biological Enhancer — Fluval recommends dosing it alongside this product to help manage ammonia as waste digestion speeds up.\u003c\/p\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered by Fluval's standard consumer guarantee against manufacturing defects, in addition to your rights under Australian Consumer Law. Standard freight class.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill it cloud the water?\u003c\/h4\u003e\n\u003cp\u003eNo — it's designed to be dosed into a running tank without causing cloudiness.\u003c\/p\u003e\n\u003ch4\u003eCan I use it in a shrimp or planted tank?\u003c\/h4\u003e\n\u003cp\u003eFluval doesn't publish invertebrate or plant-specific warnings for this product. If you're not sure, dose conservatively and keep an eye on your usual water parameters after adding it.\u003c\/p\u003e\n\u003ch4\u003eHow does the 2 L bottle differ from the 120 mL and 250 mL sizes?\u003c\/h4\u003e\n\u003cp\u003eSame formulation — the 2 L size uses a pump dispenser rather than a pour cap, aimed at larger systems or fish rooms dosing several tanks weekly.\u003c\/p\u003e","brand":"Fluval","offers":[{"title":"120ml","offer_id":55293302604067,"sku":"FLS16","price":16.95,"currency_code":"AUD","in_stock":false},{"title":"250ml","offer_id":55334980223267,"sku":"FLS17","price":27.95,"currency_code":"AUD","in_stock":false},{"title":"2ltr","offer_id":55334980256035,"sku":"FLS19","price":156.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/fluval-biological-aquarium-c-43313839210787.webp?v=1790238521","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/fluval-biological-aquarium-cleaner","provider":"Nicks AOT","version":"1.0","type":"link"}