1.  Product Overview

The ebb & flow irrigation nursery bench is a complete flood-and-drain propagation platform, not a tray on a table. A watertight, one-piece molded tray sits in a galvanized rolling frame; a pump lifts nutrient solution from a reservoir, floods the tray to a shallow and level depth, then lets it drain back. Seedlings take water and nutrients from below by capillary action, and air returns to the root zone every time the tray empties.

Because the bench is built as one system, the tray, the frame, the drain position and the irrigation cycle are matched to each other before shipment. The grower connects a reservoir, sets the timer, and the bench runs the same cycle every day without a watering crew.

A complete bench ships with
•The flood tray itself — vacuum-formed in one piece, with bulkhead openings cut to the fitting size you specify.
•The galvanized rolling frame: legs, tabletop rim, handwheel, cross bracing and anchor footplates.
•Bulkhead, elbow and seals in the size ordered, matched to the tray outlet.
•A sizing sheet for the pump and reservoir, plus a cycle-timing starting point for the crop you are raising.

2.  How the Ebb & Flow Cycle Works

One cycle has five stages. Together they deliver water, nutrients and oxygen in the same pass — which is why the system produces dense root systems and very few root diseases.

1. Flood.  The pump lifts solution from the reservoir through the bulkhead and fills the tray to a shallow, level depth in a few minutes.
2. Soak.  Substrate draws water upward by capillary action. Every cell on the bench receives the same moisture, and the foliage stays dry throughout.
3. Hold.  A short soak time, set to seedling age and substrate, lets the plug saturate without over-wetting.
4. Drain.  The pump stops and the bulkhead opens; solution returns to the reservoir by gravity. No standing water, no dry corner at the far end of the bench.
5. Aerate.  As water leaves, air refills the pores it occupied. Roots breathe before the next flood arrives.

Manufacturing Capability
Shenzhen Hongfu Tongxin Technology Co., Ltd. supplied plastic growing systems since 2008. Trays, sheet and tooling are made in-house, which is what allows a bench to be quoted to a grower's own dimensions instead of a catalogue page.
•Sheet extrusion in-house — ABS, PP and HIPS sheet is extruded on our own lines, so gauge, colour and material batch stay under one roof instead of passing between a sheet supplier and a moulder.
•Thermoforming workshop — vacuum forming lines run from propagation trays up to bench-scale flood trays.
•Tooling workshop — moulds are designed, machined and trialled in-house, so a size change is a conversation rather than a project, and the first sample matches the fiftieth container.
•Process control — incoming resin inspection, first-off dimensional checks, and a water-tightness test on every tray before packing.
•Export record — growers, greenhouse builders and distributors in more than 2,000 customer relationships worldwide†; sea, air and express shipments backed by Alibaba Trade Assurance.
•OEM and ODM as standard — your logo, your colour, your carton and your dimensions, with neutral packing available for distributors who sell under their own label.