Jump Start Smart Float 55-Cell Grow Tray w/Plugs

Floating Insert Tray for Even Root-Zone Moisture, 55-Cell

A propagation tray that sits flat on a bench can leave cells unevenly saturated, since capillary action pulls water differently depending on a cell's position relative to the reservoir. Hydrofarm's Jump Start Smart Float system floats a 55-cell insert directly on a reservoir of water in its heavy duty tray, so every cell draws moisture at the same rate regardless of where it sits.

The 55-cell capacity suits growers starting a full flat of seeds or cuttings at once, and pairing the tray with a humidity dome turns the setup into a mini greenhouse for the germination or rooting stage.

Key Features & Benefits

• 55-Cell Floating Insert — keeps every cell in even contact with the reservoir for consistent moisture.
• Heavy Duty Tray — holds the reservoir and insert together as one unit.
• 55 Included Quick Start Plugs — earth-friendly plugs sized to the insert's cells.
• Pairs with a Humidity Dome — combine with a dome, sold separately, to create a mini greenhouse.
• Separately Sold Refill Plugs — restock the same tray for another propagation round.

Who Should Use This Tray

This tray fits growers who want a floating insert system for starting seeds or cuttings, since the float design keeps the whole tray at a consistent air-to-water ratio rather than depending on where a given cell sits relative to the water source.

About Jump Start

Jump Start, a Hydrofarm brand, builds propagation trays including the Smart Float system, which floats a plug-filled insert on a water reservoir so every cell in the tray draws moisture evenly during germination and rooting.

Frequently Asked Questions

How many plugs are included with this tray?

It includes 55 earth-friendly Quick Start plugs, one for each cell in the floating insert. That's enough to fill the tray for a full propagation run.

What does the floating design actually do?

Because the insert floats directly on the reservoir in the heavy duty tray, every cell stays in even contact with the water supply regardless of its position. That evens out the air-to-water ratio across the whole tray instead of leaving some cells drier than others.

Can I use this tray with a humidity dome?

Yes, it pairs well with a humidity dome, sold separately, to create a mini greenhouse environment for germination or rooting. The dome traps humidity above the tray while the float keeps moisture even below it.

Are refill plugs available once the first batch is used?

Yes, refill plugs are sold separately, so the same tray and floating insert can be reloaded for another round once the first 55 plugs are used. That makes the tray reusable indefinitely rather than a single-use kit.

Is this tray suited to both seeds and cuttings?

Yes, the floating insert's even air-to-water ratio works for starting seeds from scratch as well as rooting cuttings. Either way, the consistent moisture level across all 55 cells is the main benefit of the float design.