SeaHawk - Flood & Drain Fitting Kit – Professional Ebb & Flow Bulkhead Set The SeaHawk Flood & Drain Fitting Kit is a robust, reliable solution for constructing or upgrading Ebb and Flow (Flood and Drain) hydroponic systems. Engineered for high-performance nutrient delivery, this kit includes both the inlet and outlet assemblies required to manage tray levels with precision. The smaller 13mm fitting serves as the primary inlet for flooding the tray, while the larger 19mm outlet assembly features an adjustable extension and overflow screen to control the maximum flood height. Built from high-impact, UV-stabilised polymers, these fittings ensure a leak-free seal and long-term durability in the high-humidity, nutrient-rich environments of professional grow rooms. Best For: DIY Ebb & Flow (Flood and Drain) systems, bottom-feed tray setups, and custom hydroponic reservoir plumbing. Key Features Dual-Action Plumbing: Includes a dedicated 13mm inlet for controlled tray flooding and a high-volume 19mm outlet for rapid, safe drainage back to the reservoir. Adjustable Flood Depth: The kit features a stackable extension piece that allows you to set the exact nutrient height for your specific root zone; simply add extra extensions for deeper grow trays. Clog-Resistant Screens: Equipped with two heavy-duty screens that prevent clay pebbles (hydroton), perlite, or roots from entering the plumbing and causing system-wide blockages. Watertight Bulkhead Design: Each fitting is designed to create a secure, compression seal against the grow tray, eliminating the risk of nutrient leaks and floor damage. UV & Chemical Resistant: Constructed from inert, horticultural-grade plastics that will not leach chemicals into your solution or become brittle under intense LED or HID lighting. Modular Compatibility: Designed to fit perfectly with standard 13mm and 19mm poly tubing and flexible PVC hoses commonly used in Australian hydroponic setups. Kit Includes 1 x 13mm Tub Inlet: For connecting to your submersible nutrient pump. 1 x 19mm Tub Outlet: For high-capacity drainage and overflow protection. 1 x Height Extension: To customise the flood level of your tray. 2 x Protective Screens: To keep your plumbing free of debris and substrate. Specifications Brand: SeaHawk Material: High-Impact ABS Plastic Inlet Size: 13mm Outlet Size: 19mm Application: Hydroponic Flood & Drain Systems Installation & Operation Tips Perfect Seal: Ensure your grow tray has clean, burr-free holes before installing the bulkhead fittings. Hand-tighten the nuts firmly to engage the seal without over-stressing the plastic. Overflow Safety: Always ensure your 19mm drain line is larger than your 13mm feed line. This ensures the tray can drain faster than it fills, preventing accidental overflows if the pump stays on too long. Custom Height: For deep-water flood techniques or larger pots, multiple extensions can be joined together to raise the overflow point to your desired level. Ideal For (Uses) Ebb & Flow Systems: The standard plumbing kit for automated tray-based hydroponics. Custom Reservoir Overflows: Acting as an emergency overflow drain for nutrient mixing tanks. Aquaponics: Suitable for use in small-to-medium fish-integrated grow beds.
