{"product_id":"reef-pure-colour-changing-co2-filter-media-560gram","title":"Reef Pure Colour Changing Co2 Filter Media 560gram","description":"\u003cp\u003e\u003cstrong\u003eScrubs CO2 from your skimmer's air intake to stop overnight pH sag.\u003c\/strong\u003e Reef Pure Colour Changing CO2 Media is a loose-fill, colour-indicating media that strips excess carbon dioxide from the air drawn into a protein skimmer — one of the most common and most overlooked causes of a reef tank sitting at pH 7.8 instead of 8.2 despite good alkalinity and regular water changes. Pack it into a compatible 10\" x 2.5\" canister, such as the Reef Pure Dual CO2 Reactor, and watch the colour change tell you exactly when it's spent.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour-indicating fill\u003c\/strong\u003e — the media turns from white to violet as it exhausts, so replacement is a visual check, not a guess.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreats the air, not the water\u003c\/strong\u003e — it scrubs CO2 from the air feeding your skimmer before that air reaches the tank, rather than adding anything to the aquarium directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-reported pH lift\u003c\/strong\u003e — Reef Pure's own testing reports pH rising from around 7.8 to 8.3 after a few days of continuous operation on a typical reef system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard canister fit\u003c\/strong\u003e — loose-fill format for any 10\" x 2.5\" filter housing, including the Reef Pure Dual CO2 Reactor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eReef Pure RO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eColour-changing CO2-scrubbing media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack weight\u003c\/th\u003e\n\u003ctd\u003e560 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePack dimensions\u003c\/th\u003e\n\u003ctd\u003eApprox. 16.5 x 9 x 9 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eProtein skimmer air intake (not RO\/DI water treatment)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003ctd\u003eAA0564\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003ctd\u003e740528975021\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWill it fit my setup?\u003c\/h3\u003e\n\u003cp\u003eYou need a canister to hold it in — a 10\" x 2.5\" filter housing plumbed onto your protein skimmer's air intake line. The \u003ca href=\"\/products\/reef-pure-dual-co2-reactor\"\u003eReef Pure Dual CO2 Reactor\u003c\/a\u003e is sized for exactly this media. If you already run a compatible housing from another brand, this media packs into it the same way.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e marine and reef systems running a protein skimmer, where low ambient air quality or a stuffy plant room is pulling tank pH down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e freshwater tanks (there's no skimmer air intake to fit it to), or as a fix for low pH caused by low alkalinity — this media addresses CO2 in the air supply, not a KH deficit in the water, and the two problems need different fixes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat's included \/ Not included\u003c\/h3\u003e\n\u003cp\u003eThe pack contains loose media only. It does not include a canister housing — you'll need the Reef Pure Dual CO2 Reactor or another 10\" x 2.5\" housing already plumbed to your skimmer.\u003c\/p\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eWatch the colour: fresh media is white and turns violet as it's exhausted. Reef Pure doesn't publish a fixed replacement interval in weeks or months, because exhaustion rate depends on how much air your skimmer draws and how CO2-heavy that air is — the colour change is the accurate signal, not a calendar date.\u003c\/p\u003e\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cp\u003ePair with the \u003ca href=\"\/products\/reef-pure-dual-co2-reactor\"\u003eReef Pure Dual CO2 Reactor\u003c\/a\u003e if you don't already have a housing for it.\u003c\/p\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eAs a consumable filter media, this isn't covered by a fixed-term warranty. If it arrives faulty or not as described, you're covered under Australian Consumer Law regardless. Standard shipping applies — no special freight handling is required for this item.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWhat does this media actually remove?\u003c\/h4\u003e\n\u003cp\u003eIt strips excess dissolved carbon dioxide from the air stream entering your protein skimmer, rather than treating the tank water directly.\u003c\/p\u003e\n\u003ch4\u003eWill it fix low pH on its own?\u003c\/h4\u003e\n\u003cp\u003eIt addresses one common cause — CO2-heavy air reaching the skimmer — but won't correct low pH caused by insufficient alkalinity. Check your KH first if pH remains low after installing it.\u003c\/p\u003e\n\u003ch4\u003eHow do I know when to replace it?\u003c\/h4\u003e\n\u003cp\u003eThe media is colour-indicating: it starts white and turns violet as it exhausts. Replace it once the colour change is complete.\u003c\/p\u003e\n\u003ch4\u003eDoes this go into my RO\/DI unit?\u003c\/h4\u003e\n\u003cp\u003eNo. Despite the Reef Pure RO brand name, this product treats skimmer air, not RO\/DI water. It has no role in your reverse osmosis or deionisation stages.\u003c\/p\u003e","brand":"Reef Pure RO","offers":[{"title":"Default Title","offer_id":55242268967203,"sku":"AA0564","price":19.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/reef-pure-colour-changing-co2-filter-media-560gram-3138-1600.jpg?v=1781836185","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/reef-pure-colour-changing-co2-filter-media-560gram","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}