Mega Mushroom Grow Kit - The Monotub Edition

The Original PF Tek Kit — Now Monotub Ready

Start with foolproof jars. Upgrade to a high-yield monotub. Same kit, zero new gear.

For 15 years the Mega Mushroom Kit has been the easiest way for beginners to grow their first flush using the time-tested PF Tek jar method. Now we've upgraded the growing chamber to our Large 66-Quart Monotub — so the moment you're ready for bigger harvests, you convert the very same kit into a full bulk monotub grow. No second purchase. No guesswork.

Two ways to grow — one beginner-proof kit

Grow anywhere — even a closet or a dirty basement

Contamination is the #1 reason first grows fail. That's why the Mega Kit is a sealed, self-regulating environment that manages itself so your surroundings don't matter. Set it up in a spare closet, a laundry room, or an unfinished basement — the chamber does the work:

• Humidity + fresh air in one — our custom, handmade hydroponic humidifier is a bubbler-style unit that evaporates water to hold fruiting humidity and pushes a steady stream of fresh, positive-pressure air into the chamber. That's what replaces drilling hundreds of tiny holes in your tub — and it means no daily misting.
• Included air pump — powers the humidifier and keeps clean air cycling so CO₂ never stalls your fruiting.
• Included heat mat — warms the chamber so you can grow even in a cold room. Temperature is set manually, and you can add our optional temperature controller anytime for fully automatic heat.
• Automated light cycles — a dual-spectrum LED on a 3D-printed adhesive mount, run by its own timer, signals your mushrooms to fruit.
• Two timers included — run your lighting and your air/humidity cycles independently and completely hands-off.

How it works — from box to harvest

Everything in the box

• 18 sterilized ½-pint substrate jars (expandable to 30)
• Large 66-Quart Monotub growing chamber
• Heat mat (manual temperature adjustment)
• Digital thermometer & hygrometer
• Custom hydroponic humidifier with hydroton media
• Electric air pump with HEPA filter built in the hose.
• 2 programmable timers (light + air/humidity)
• Dual-spectrum LED grow light (900 lumens, 48-diode)
• 3D-printed adhesive light mount (new)
• 2 gallons of perlite
• 1 quart of vermiculite (new)
• Nitrile gloves & alcohol wipes
• 12oz Grower's Select Continuous Mist Spray Bottle
• Illustrated instruction manual
• Step-by-step video grow guide emailed after checkout

Technical specifications

Why growers trust the Mega Kit

We've been building mushroom kits for over 15 years, and the Mega Kit has put more than 5,000 growers on the path to their first harvest — earning a 4.9-star average across 567 reviews. This isn't a gimmick or a one-flush novelty. It's a complete, reusable cultivation system designed by people who grow, backed by real support, and built to take you from your very first jar all the way to bulk monotub yields.

Frequently asked questions

Is this good for a total beginner?

Absolutely — that's who it's built for. The PF Tek jars are the most beginner-friendly method there is, and the automated chamber removes the guesswork. The illustrated manual and video guide walk you through every step.

Do I have to use the monotub right away?

No. Start simple by fruiting straight from the jars. When you're ready for bigger harvests, the monotub conversion is waiting in the same box — no extra equipment to buy.

Will it work in my basement or a closet?

Yes. The sealed chamber manages humidity, fresh-air exchange, and light automatically, so it performs even in less-than-ideal rooms. A closet, laundry room, or unfinished basement all work fine.

How does the heat work — is it automatic?

The included heat mat warms the chamber and is adjusted manually, which is all most rooms need. If you want fully automatic, set-and-forget temperature, we offer an optional temperature controller you can add on to pair with the mat.

Can I reuse it?

Completely. Every component is reusable for grow after grow, and the kit supports advanced bulk techniques as your skills grow.

What about spores or cultures?

Spores and cultures are sold separately and are not included. This kit is intended for the cultivation of legal and medicinal mushroom varieties in accordance with the laws of your area. Read our Spore Syringe Buying Guide Here. This Kit requires 2 spore syringes or liquid culture syringes of your choice.