Grow1 Round Grow Lids - 8.5-in - 40 Count

Dual-Sided Light Control for Open Sites - 40 Lids

Exposed growing media lets light in, and that invites algae and mildew around the root zone. These round lids cover the opening, and the black face blocks light while the white face reflects it back toward the plants. The material is 5.5 mil thick, so it holds its shape when handled.

This unit holds 40 round lids at 8.5 in, which suits growers outfitting a bench, a small room, or a set of hydroponic sites in one order. Hobbyists can use a few at a time and keep the rest for replacements.

Key Features & Benefits

• Dual-sided design — choose the white face up to reflect light or the black face up to block it.
• 5.5 mil thickness — a sturdy sheet that handles repeated use.
• Round format — suits round openings and sites.
• 40 lids per unit — covers many sites in one order.

Who Should Use Grow1 Round Grow Lids

Indoor growers running hydroponic systems, propagation setups, or covered containers who want better light control at the media surface. Both home and licensed commercial growers can use them.

About Grow1 Round Grow Lids

Grow1 Round Grow Lids are dual-sided covers with a white face and a black face, 5.5 mil thick. Each lid measures 11.5 x 11.5 x 0.3 in as shipped, and a 40-lid unit weighs 0.8 lb.

Frequently Asked Questions

Q: Which side should face up?
A: Face the white side up to reflect light toward the plants. Face the black side up to block light from the surface below.

Q: How many lids come in one unit?
A: One unit contains 40 round lids. It is sold as a single item.

Q: How thick are the lids?
A: The material is 5.5 mil thick. That gives a firmer cover than thin film.

Q: What does mil mean?
A: A mil is one thousandth of an inch. It is the standard way to state the thickness of plastic sheet.

Q: Do the lids help with algae?
A: The black face blocks light, and light is what algae need to grow. Blocking it at the surface reduces conditions that favor algae and mildew.