{"product_id":"red-sea-reefer-inner-downpipe-s-850-s-1000-g2-900-s-850-s-1000","title":"Red Sea Reefer Inner Downpipe S-850\/S-1000 \u0026 G2 900\/S-850\/S-1000","description":"\u003cp\u003e\u003cstrong\u003eThe genuine Red Sea inner downpipe for large Reefer overflow boxes.\u003c\/strong\u003e Part number 43315, fitting the Reefer-S 850, Reefer-S 1000 and the G2 and G2+ versions of the Reefer 900, Reefer-S 850 and Reefer-S 1000 — the inner sleeve that sets the water level and downflow rate into the sump.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine Red Sea part 43315\u003c\/strong\u003e — matches the factory fitment exactly, no adapters or trimming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold singly\u003c\/strong\u003e — the standalone inner downpipe only; it doesn't include the outer downpipe or the separate sump connector pipe set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect diameter and seal profile\u003c\/strong\u003e for a direct swap into the overflow box on the models it fits.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWill it fit my tank?\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFits\u003c\/th\u003e\n\u003cth\u003eDoes not fit\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e\u003cul\u003e\n\u003cli\u003eReefer-S 850\u003c\/li\u003e\n\u003cli\u003eReefer-S 1000\u003c\/li\u003e\n\u003cli\u003eReefer-S 850 G2 \/ G2+\u003c\/li\u003e\n\u003cli\u003eReefer 900 G2 \/ G2+\u003c\/li\u003e\n\u003cli\u003eReefer-S 1000 G2 \/ G2+\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cul\u003e\n\u003cli\u003eReefer 3XL 900 (uses part R42486)\u003c\/li\u003e\n\u003cli\u003eReefer XXL 750\u003c\/li\u003e\n\u003cli\u003eReefer Nano, 170, 250, 350, 450, XL425, XL525, Peninsula 500\/650 — each uses its own size-specific downpipe\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eWe haven't been able to confirm whether this part also fits the newer G3 generation of these sizes — if you have a G3 model, check with us before ordering rather than assuming fitment.\u003c\/p\u003e\u003ch3\u003eNot included\u003c\/h3\u003e\u003cp\u003eThis is the inner downpipe only. The outer downpipe and the separate sump connector pipe set (Red Sea part R42493) are not included and are sold separately.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e replacing a cracked, warped or leaking inner downpipe, or restoring proper silent overflow function after biofilm buildup has changed how the overflow drains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e the Reefer 3XL 900, XXL 750, or any other Reefer size not listed above — each has its own dedicated part.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eClean downpipes during major maintenance. Biofilm buildup inside overflow plumbing is the most common cause of gurgling or splashing noise that develops gradually rather than appearing overnight — a clean is worth trying before assuming the part has failed.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eCovered by your rights under Australian Consumer Law. Standard parcel delivery.\u003c\/p\u003e\u003ch3\u003eGoes well with\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe matching outer downpipe\u003c\/strong\u003e — if both are original and one has failed, check the other for wear at the same time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSump connector pipe set (R42493)\u003c\/strong\u003e — a related plumbing spare for the same Reefer size range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this fit my Reefer 900 G3?\u003c\/h4\u003e\u003cp\u003eWe can't confirm that — Red Sea's G3 generation may use a different part. Contact us with your model before ordering if you have a G3.\u003c\/p\u003e\u003ch4\u003eIs the outer downpipe included?\u003c\/h4\u003e\u003cp\u003eNo, this listing is the inner downpipe only.\u003c\/p\u003e\u003ch4\u003eWhat symptom does this part usually fix?\u003c\/h4\u003e\u003cp\u003eA cracked, warped or heavily biofouled inner downpipe, or persistent overflow noise that cleaning hasn't resolved.\u003c\/p\u003e\u003ch4\u003eDoes it fit the Reefer 3XL 900?\u003c\/h4\u003e\u003cp\u003eNo — the 3XL 900 uses a different part, R42486.\u003c\/p\u003e","brand":"RedSea","offers":[{"title":"Default Title","offer_id":54774160687395,"sku":"RED816d","price":165.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/RED816d.jpg?v=1772078850","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/red-sea-reefer-inner-downpipe-s-850-s-1000-g2-900-s-850-s-1000","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}