{"product_id":"eshopps-u-tube","title":"Eshopps U-Tube","description":"\u003cdiv style=\"font-family:Georgia,serif;color:#1a1a1a;max-width:860px;line-height:1.7;\"\u003e\n\u003cp\u003eReplacement \u003cstrong\u003eU-tube\u003c\/strong\u003e for \u003cstrong\u003eEshopps\u003c\/strong\u003e hang-on overflow boxes. The U-tube is the siphon that carries water over the tank rim from the inner box to the outer prefilter box, so it is the one part that decides whether your overflow keeps up with the return pump. Keep a spare on the shelf: a cracked, scratched, or algae-fouled tube is the usual reason a hang-on overflow loses siphon. The rigid, large-bore tube also works for custom plumbing projects. Pair it with a \u003ca href=\"\/products\/trigger-systems-titanium-34-sump\"\u003eTrigger Systems sump\u003c\/a\u003e or browse \u003ca href=\"\/collections\/skimmers-reactors-filtration\/ft-sump+saltwater\"\u003eSumps \u0026amp; Refugiums\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv style=\"background:#FFF8E1;border-left:4px solid #F9A825;padding:10px 14px;margin:0 0 14px;font-size:0.95em;\"\u003e\n\u003cstrong\u003eMatch the diameter to your box.\u003c\/strong\u003e Measure the tube you are replacing before ordering. A U-tube on its own is not an overflow; it only works inside a hang-on overflow box.\u003c\/div\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eChoose your size\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 inch:\u003c\/strong\u003e fits the Eshopps PF-Nano overflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.5 inch:\u003c\/strong\u003e fits the Eshopps PF-1800 overflow.\u003c\/li\u003e\n\u003cli\u003eRunning a PF-300, PF-800, PF-1000, or PF-1200? Those take the 1.25 inch tube. Ask us and we will bring one in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRigid plastic, holds its shape and its prime\u003c\/li\u003e\n\u003cli\u003eLarge bore for more flow than a flexible tube of the same size\u003c\/li\u003e\n\u003cli\u003eDirect replacement for the tube shipped with Eshopps Power Flow overflow boxes\u003c\/li\u003e\n\u003cli\u003eUseful for DIY siphon and overflow projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%;max-width:640px;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eEshopps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eSizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e1 in and 1.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eFits, 1 in\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eEshopps PF-Nano\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eFits, 1.5 in\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eEshopps PF-1800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eRigid plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSiphon tube for hang-on overflow boxes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003e\u003cstrong\u003eWater type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #B2EBF2;padding:6px 10px;\"\u003eSaltwater or freshwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eRecommended Pairings\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/trigger-systems-titanium-34-sump\"\u003eTrigger Systems Titanium 34 Sump\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/skimmers-reactors-filtration\/ft-overflow+saltwater\"\u003eOverflow Boxes \u0026amp; Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/skimmers-reactors-filtration\/ft-sump+saltwater\"\u003eSumps \u0026amp; Refugiums\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:14px 0 4px;font-size:1.05em;font-weight:600;line-height:1.25;border-left:4px solid #006064;padding-left:8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I restart the siphon?\u003c\/strong\u003e Fill the tube completely, cap both ends with your thumbs, seat it in both boxes under water, then release. Some overflow boxes have an airline port you can suck on or connect to a small pump to pull the air out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I replace it?\u003c\/strong\u003e Whenever it is scratched, cloudy, or holding air bubbles at the top of the bend. Clean it with a bottle brush during water changes to keep the siphon strong.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eshopps","offers":[{"title":"1\"","offer_id":48771491299547,"sku":"19003","price":11.98,"currency_code":"USD","in_stock":false},{"title":"1.5\"","offer_id":48771491332315,"sku":"82935","price":11.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/31891.png?v=1778689877","url":"https:\/\/squeakysaquatics.com\/products\/eshopps-u-tube","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}