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Pairs well with
The black crop box lid is the missing piece for any crop box build. One size fits the lot — 23L, 45L, and 65L tubs all share the same footprint, so this lid covers any of them. Block light to stop algae taking over your reservoir, lock in humidity for fresh clones, or seal up tubs for clean storage. Tough, simple, and built to last.
Specifications
- Cover nutrient reservoirs in DWC builds to keep algae out and slow evaporation in summer.
- Use as a temporary humidity dome over fresh clones — but vent every few hours and switch to the clear propagator lid for longer cloning runs.
- Stack lids between tubs in storage to keep your crop box stack tidy and contents clean.
- Drill holes the size of your net pots and you've got a custom DIY DWC lid — the black plastic blocks light from the root zone.
- Always wipe down before reuse to stop pathogens hitching a ride between grows.
How To Use The Crop Box Lid
Pairs Well With
The water-holding bottom half of any crop box build. Lid this tub to lock in a clean nutrient reservoir.
Crop Box Black Grated BaseThe stackable top half. Add a lid above for storage or below for a sealed nutrient reservoir.
Crop Box Propagator Lid LargeClear dome with 3 adjustable green vents. The propagation-focused alternative — traps humidity for clones and seedlings.
LECA Clay PebblesThe grow medium of choice for crop box DWC builds — lightweight, reusable, pH-neutral.
FAQ
Does this lid fit all crop box sizes?
Yes. The 61 × 43cm footprint fits 23L, 45L, and 65L crop box tubs. Those tubs share the same top dimensions and only differ in depth, so one lid covers the lot.
Will it stop algae growth in my nutrient reservoir?
Yes. Algae needs light to grow — the solid black plastic blocks every wavelength, killing the main food source. Combined with a clean reservoir, you'll keep algae out of your system.
Can I use this lid for propagation?
Yes, for short-term use only. The solid lid creates good humidity but needs venting every few hours. For ongoing clone setups, the Crop Box Propagator Lid with its clear dome and 3 adjustable green vents is the better option — designed for propagation rather than reservoir sealing.
Does the lid lock onto the tub?
No. The lid sits over the tub rim without clips or latches — easy to lift off and replace, but not waterproof if tipped or knocked sideways.
Can I drill holes in it to make a DIY DWC lid?
Yes. Many growers drill holes the size of their net pots to create a custom DWC system. The black colour is ideal for blocking light from the root zone — just measure twice before cutting.
Will it handle outdoor sun without warping?
Yes. The UV-stable plastic resists warping and cracking under direct sun, so it's fine on outdoor setups, greenhouses, or patios.
Seal It Up With The Crop Box Lid
Block algae, lock in humidity, or stack tubs clean — the missing piece for any crop box build.