{"product_id":"bell-siphon-glockensiphon-aquaponik","title":"Bell Siphon for Aquaponics – Flood \u0026 Drain Kit","description":"\u003cp\u003e\u003cstrong\u003eReliable Bell Siphon for your Aquaponics Grow Bed – stable flood and drain cycles without electricity or timers.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003ebell siphon\u003c\/strong\u003e (sometimes spelled \u003cstrong\u003ebell syphon\u003c\/strong\u003e) is the core component of any aquaponics flood and drain system, also known as an ebb and flow system. It automatically fills and completely drains your grow bed using gravity and pressure differences – no electronics required.\u003c\/p\u003e\n\u003cp\u003eIf you are looking to buy a reliable bell siphon for aquaponics that works out of the box, this kit is designed to deliver stable and consistent cycling without trial and error.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDIY aquaponics systems\u003c\/li\u003e\n\u003cli\u003eAquaponics aquarium setups\u003c\/li\u003e\n\u003cli\u003eIBC tote aquaponics systems\u003c\/li\u003e\n\u003cli\u003eExisting flood and drain or hydroponic grow beds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy use a Bell Siphon in aquaponics?\u003c\/h2\u003e\n\u003cp\u003eA properly designed bell siphon brings stability and reliability to your entire aquaponics system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBy regularly flooding and draining the grow bed:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePlant roots receive optimal oxygenation\u003c\/li\u003e\n\u003cli\u003eThe fish tank water is continuously aerated\u003c\/li\u003e\n\u003cli\u003eNutrient uptake improves\u003c\/li\u003e\n\u003cli\u003eWater stagnation is prevented\u003c\/li\u003e\n\u003cli\u003eAdditional air pumps can often be reduced or eliminated\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eThe result:\u003c\/strong\u003e Healthier plants, more stable water parameters, and fewer technical failure points.\u003c\/p\u003e\n\u003ch2\u003eBuild your own bell siphon or use a proven kit?\u003c\/h2\u003e\n\u003cp\u003eMany aquaponics enthusiasts search for bell siphon design guides and attempt to build their own system. However, achieving the correct balance between flow rate, standpipe height, and bell diameter is critical for reliable operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon DIY issues include:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSiphon does not start\u003c\/li\u003e\n\u003cli\u003eSiphon does not break\u003c\/li\u003e\n\u003cli\u003eConstant draining\u003c\/li\u003e\n\u003cli\u003eUnstable cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis bell siphon kit is optimized for grow beds between 20–30 cm (8–12 inches) in height and designed to produce consistent flood and drain cycles without constant adjustments. If you want to avoid trial and error, this tested solution is the safer choice.\u003c\/p\u003e\n\u003ch2\u003eHow does a Bell Siphon work?\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eYour grow bed is continuously filled by a pump.\u003c\/li\u003e\n\u003cli\u003eOnce the water reaches the standpipe height, water begins to flow through it.\u003c\/li\u003e\n\u003cli\u003eThe bell creates a vacuum effect.\u003c\/li\u003e\n\u003cli\u003eThe entire grow bed drains rapidly.\u003c\/li\u003e\n\u003cli\u003eAs soon as air enters the bell at the bottom, the siphon breaks.\u003c\/li\u003e\n\u003cli\u003eThe grow bed begins filling again.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eThe cycle repeats automatically – no timers, no electronics, no moving parts.\u003c\/p\u003e\n\u003ch2\u003eSuitable for grow beds 20–30 cm (8–12 inches) high\u003c\/h2\u003e\n\u003ch3\u003eStandard standpipe heights\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align: left; border-bottom: 1px solid #ddd; padding: 8px;\"\u003eGrow Bed Height\u003c\/th\u003e\n\u003cth style=\"text-align: left; border-bottom: 1px solid #ddd; padding: 8px;\"\u003eStandpipe Height\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom: 1px solid #eee; padding: 8px;\"\u003e20 cm\u003c\/td\u003e\n\u003ctd style=\"border-bottom: 1px solid #eee; padding: 8px;\"\u003e15 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom: 1px solid #eee; padding: 8px;\"\u003e25 cm\u003c\/td\u003e\n\u003ctd style=\"border-bottom: 1px solid #eee; padding: 8px;\"\u003e20 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom: 1px solid #eee; padding: 8px;\"\u003e30 cm\u003c\/td\u003e\n\u003ctd style=\"border-bottom: 1px solid #eee; padding: 8px;\"\u003e25 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eNote: The standpipe can be shortened if required.\u003c\/em\u003e\u003cbr\u003e\u003cstrong\u003eRecommendation:\u003c\/strong\u003e Standpipe height = grow media height minus approx. 5 cm (2 inches).\u003c\/p\u003e\n\u003ch2\u003eWhat’s included in the kit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eStandpipe\u003c\/li\u003e\n\u003cli\u003eBell\u003c\/li\u003e\n\u003cli\u003eMedia guard (perforated protection cylinder)\u003c\/li\u003e\n\u003cli\u003eBulkhead fitting with seals\u003c\/li\u003e\n\u003cli\u003eSiphon elbow for underside connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAll components are precisely matched and ready for installation.\u003c\/p\u003e\n\u003ch2\u003eInstallation in 5 steps\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eDrill a 32–35 mm hole in the desired location of your grow bed.\u003c\/li\u003e\n\u003cli\u003eInstall the bulkhead fitting with the included seals.\u003c\/li\u003e\n\u003cli\u003eInsert the standpipe (grow media height minus 5 cm).\u003c\/li\u003e\n\u003cli\u003ePlace the media guard and fill in your grow media.\u003c\/li\u003e\n\u003cli\u003ePosition the bell and attach the siphon elbow underneath.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe outlet must not end below water level, as the siphon needs air to break properly.\u003c\/li\u003e\n\u003cli\u003eThe elbow should not slope upward; it must be level or slightly downward to ensure correct siphon effect.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the bell siphon start automatically?\u003c\/strong\u003e\u003cbr\u003eYes. Once the defined water level is reached, the bell siphon activates automatically.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy buy a bell siphon instead of building one?\u003c\/strong\u003e\u003cbr\u003eBuilding a bell siphon is possible, but requires testing and fine tuning of flow rate and dimensions.\u003c\/p\u003e\n\u003cp\u003eThis kit has been refined over years of product development and optimized for stable flood and drain cycles. Manufactured in Austria, it stands for durable materials, precise workmanship and consistent quality at a fair price.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a timer?\u003c\/strong\u003e\u003cbr\u003eNo. The water inflow runs continuously via your pump.\u003c\/p\u003e\n\u003cp\u003eOnce the water level reaches the standpipe height, the siphon activates, drains the grow bed completely, and automatically breaks once air re-enters the bell.\u003c\/p\u003e\n\u003cp\u003eThe entire flood and drain cycle runs independently – without timers or electronic control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this kit suitable for beginners?\u003c\/strong\u003e\u003cbr\u003eYes. Especially recommended for DIY beginners who want a reliable solution without experimentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat flow rate is required?\u003c\/strong\u003e\u003cbr\u003eA moderate continuous flow rate of approximately 5–15 liters per minute is generally sufficient. The system should not be overloaded.\u003c\/p\u003e\n\u003ch2\u003eConclusion\u003c\/h2\u003e\n\u003cp\u003eA reliable bell siphon is essential for a stable aquaponics flood and drain system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWith this bell siphon kit you get:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA tested solution used in over 1,000 systems worldwide\u003c\/li\u003e\n\u003cli\u003eEasy installation\u003c\/li\u003e\n\u003cli\u003eDurable components\u003c\/li\u003e\n\u003cli\u003eConsistent and stable cycling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eLess complexity.\u003cbr\u003eMore stability.\u003cbr\u003eBetter plant growth.\u003c\/strong\u003e\u003c\/p\u003e","brand":"OFERA","offers":[{"title":"20 cm | 8 inches","offer_id":40281321603266,"sku":"1032","price":61.0,"currency_code":"CHF","in_stock":true},{"title":"25 cm | 10 inches","offer_id":40281321668802,"sku":"1003","price":63.0,"currency_code":"CHF","in_stock":true},{"title":"30 cm | 12 inches","offer_id":40281321701570,"sku":"1025","price":65.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0577\/6284\/0770\/products\/OFERABellSiphonKit20cm-Set.jpg?v=1636986504","url":"https:\/\/oferlo.shop\/en-ch\/products\/bell-siphon-aquaponics-kit","provider":"OFERA","version":"1.0","type":"link"}