FloraFlex FloraCap 2.0, 4"

Light-Blocking Top-Feed Cap for 4 Inch Growing Media

Hand-watering a tray of rockwool cubes evenly gets harder as the count goes up, and an exposed medium surface invites algae growth under grow lights. The FloraFlex FloraCap 2.0 is a top-feeding tool that sits on top of a 4 inch rockwool cube, redesigned for a more consistent flow rate, even distribution, slightly increased air flow, and improved stabilization compared to the original FloraCap. Placing the cap on a 4 inch cube helps maximize available space during the vegetative cycle.

Each cap features 13 flower-designed louvers that deliver water, nutrients, and air to the medium while blocking out light. By covering the top of the media, the FloraCap lets the root zone dry at a more consistent rate and supplies the oxygen plants need, which helps reduce algae growth while encouraging healthy roots to fill the medium. Fill the cap by hand or automate it with FloraClips.

Key Features & Benefits

• 13 flower-designed louvers — deliver water, nutrients, and air to the medium while blocking light.
• Fits 4 inch cubes — sized to sit on top of 4 inch rockwool cubes.
• Light-blocking cover — covers the top of the media to help slow algae growth.
• Consistent root zone drying — promotes a more even dry-down rate across the root zone.
• Manual or automated fill — fill by hand or automate feeding with FloraClips and tubing.

Who Should Use the 4 Inch FloraCap

Growers working with 4 inch rockwool cubes during the vegetative cycle will find the FloraCap useful for maximizing top-feed coverage while keeping light off the medium surface.

About FloraFlex FloraCap 2.0

The FloraCap 2.0 is FloraFlex's redesigned top-feed cap line, built across multiple sizes to match common rockwool cube dimensions and to pair with FloraClips for automated feeding.

Frequently Asked Questions

What size medium does this FloraCap fit?

It's sized for 4 inch rockwool cubes. Using a cap sized to the medium keeps the louvers positioned correctly for even coverage.

How many louvers does it have?

It features 13 flower-designed louvers. Each louver channels water, nutrients, and air onto the medium surface while keeping light off it.

Can I automate feeding with this cap?

Yes, fill by hand or automate with FloraClips and 1/4 inch OD tubing. Automating with clips lets the cap run on a timed feed schedule without manual watering.

How does the cap help with algae?

By blocking light and promoting a more consistent dry-down, it helps reduce algae growth on the medium surface. Algae typically needs both light and consistently wet media to establish, and the FloraCap limits both conditions.

When should I place the FloraCap on the medium?

Place it as soon as the cube, smartpot, or fabric pot is set in its final growing position, typically at the start of the vegetative cycle. Setting it early gets the light-blocking and even-drying benefits from the start rather than after algae has already begun to form.