Grow Trays & Flood Tables for Hydroponic Systems
Hydroponic flood tables — also called grow trays or ebb-and-flow tables — are rigid containers designed to temporarily fill with nutrient solution and drain back to a reservoir. Most commonly used in ebb and flow systems, they’re also used as runoff collection trays in drip-irrigated setups, propagation trays for seedlings and cuttings, and as the structural base of commercial rolling bench systems.
Seed Trays vs. Grow Trays vs. Flood Tables
These terms are often used interchangeably but serve distinct purposes. Seed trays are shallow trays for germination and early propagation — typically paired with humidity domes, with or without drainage holes. Grow trays are deeper, more rigid trays designed to hold containers or blocks and catch runoff from hand-watering or drip irrigation. Flood tables are specifically engineered for ebb and flow systems — they require precise leveling, plumbing fittings at specific drain points, and compatibility with pumps and reservoirs for the flood-and-drain cycle. Choosing the right tray depends on your growing method, plant size, and whether you’re running automated or manual irrigation.
ID vs. OD: Sizing for Stands & Plants
Trays are listed with inside dimensions (ID) and outside dimensions (OD). OD determines whether the tray fits your stand or rolling bench frame. ID determines how many plants, containers, or rockwool slabs fit inside the tray. Botanicare trays maintain standardized true inside dimensions across their product line — engineered to hold standard container sizes without wasted space. Sizes range from compact propagation-scale trays up to large commercial 4×8 and 4×12 foot flood tables for greenhouse production.
Custom & Commercial Rolling Bench Systems
For large-scale or commercial cultivation, standard flood tables on rolling benches maximize canopy coverage by eliminating fixed aisles. A rolling bench system increases usable grow space by up to 60% compared to stationary bench layouts in the same footprint. Hydrobuilder can configure custom commercial rolling bench systems to fit your exact floor plan dimensions — all legs, leveling headers, and framework in galvanized steel with up to 2 inches of height adjustment. Custom configurations are available through our commercial accounts program.
Browse trays by size: 4×4 flood tables or all grow trays and stands. Pair with ebb and flow systems or rolling benches and stands. For commercial builds, contact our commercial team for custom configurations. Commercial accounts available.
