Humidity Dome 5x8, Heavy-Duty 3mm Seed Starter Propagation Kit

Overview AC Infinity has built a reputation for premium indoor growing gear, and their seed starter kits are no exception. Designed for both seed germination and cloning, it is a massive upgrade over the flimsy, disposable plastic trays typically found at garden centers. The Pros Heavy-Duty Build: The most praised feature is its durability. The drip tray and clear dome are made from thick plastic that doesn't buckle or crack when filled with wet soil or moved around. Height Extenders: A standout feature is the included modular height extension panels. This allows you to raise the roof of the dome, giving taller seedlings and clones an extra week or two of high-humidity growth before they hit the ceiling. Precise Airflow Control: The adjustable vents allow you to easily dial in the humidity and prevent the mold issues common in cheaper, unvented domes. All-in-One Options: AC Infinity offers bundled versions that come with custom-fitted Samsung EVO LED grow light bars and a seedling heat mat, making it a complete, self-contained propagation station. The Cons Over-Humidification: The dome seals so well that humidity can easily skyrocket to 99%. You have to be proactive about opening the vents and removing the dome once the seeds pop to prevent root rot or stretching. Heat Mat Limitations: For the kits that include a heating pad, some users note the pad lacks a built-in thermostat and runs a bit warm. You may need to pair it with a separate temperature controller to avoid drying out your soil plugs or baking delicate taproots. Final Verdict The AC Infinity Seed Starter is definitely worth the investment for serious indoor growers. While it costs more than standard propagation trays, its robust build means you will be able to reuse it for years. If you struggle with flimsy trays cracking or clones outgrowing their space too quickly, the sturdy base and unique height extenders make this an excellent, reliable upgrade.

Sturd sturday sturday. Comes with extension dome, which is great! Works for all types seeds and propagation! Easy set up, plastic is thick nice material. Even the bottom tray(that holds seeds/clones) it sturdy as hell! Def throwing out all those cheap plastic tray/dome lid sets that are flimsy as crap that I’ve using for years! It’s got the height, space, sturdiness that you never knew you wanted! This tray imo is the top (most affordable) evolution of the solar starter dome that I’ve yet to use! 10/10 would recommend and buy again!

Nice and sturdy. I got the extension to start rhodendron cuttings since I needed the height.

Will buy again! Great quality and it held in the humidity. Perfect for growers.

Successfully propagated my first plant using this. Going to be propagating everything in my yard now. Also used to start all my vegetables seeds this year.

Love it! Very nice and solid!

This is great for germinating seeds, and has plenty of space for cuttings to grow. The vents allow you to control the air flow for heat and humidity. Very durable and I enjoy the comfort of the controller on the heating mat.

Wel built . For tiny clone cuts. Not too tall even with extension.

Well made strong durable Well worth purchasing,

Solid cloning chamber can be used for years, nice vents, quality construction.

Gutes Mini Gewächshaus für Kräuter und die Anzucht von Pflanzen. Gut verarbeitet und hochwertige Materialien.

Encantado me gusto mucho y los materiales se sienten muy buenos

I don't regret buying this. I bought just the basic box without the lights and it's great for clones, and for starting my seeds. Combining this with a heat mat made my seedlings vary happy.