McKennaii Cloud920® Classic XL

Customer Reviews

Not quite 5 stars due to lower than expected yields Review by DK

Rating

I followed the grow kit instructions provided by the Magic Mushroom Shop website. The cake yielded two flushes. It was retired after the 2nd flush as the cake became exhausted.

1st flush - Fresh air exchange started 3 days after set up. Pins started to appear at day 8. The mature fruits were harvested at day 15. The harvest was cracker dry at day 19 using the fan / silica drying method. The 1st flush cracker dry yield was 14.8g. I was expecting a higher yield when compared to yields from other grow kit providers. I used a heat mat placed between two towels triple folded with the thermostat placed between the folds of the top towel and to the side of the kit. The heat mat thermostat was held constant at 23C that promoted a light humidity. No additional misting was required. The kit was not enclosed i.e. was on a shelf and not placed in a cardboard box.

2nd flush – After harvesting the 1st flush, I misted the cake with x25 misting sprays to rehydrate it (as per instructions). I used the same approach to the 1st flush i.e. heat mat, no additional misting required, no kit enclosure and drying method. Fresh air exchange started 3 days after misting. Pins started to appear at day 5. The mature fruits were harvested between days 14 and 16. The harvest was cracker dry at day 18. The 2nd flush yield was 6.8g. Again, like the 1st flush, I was expecting a higher 2nd flush yield. (Posted on 2/14/2026)

Great product and amazing yields! Review by Cal-tivation

Rating

The McKennaii Cloud 920 XL mushroom grow kit is designed as a high-performance, beginner-friendly option that focuses on strong yields and repeat harvests with minimal complexity. The XL format uses a large, fully colonized substrate block, which gives the mycelium a strong starting point and plenty of nutrients to support abundant mushroom growth over time. Because the substrate is already fully developed when it arrives, the grower skips the most failure-prone stages and can move directly into fruiting.

One of the key strengths of this kit is its yield potential. The larger substrate volume provides a broad fruiting surface and enough stored energy to support several healthy flushes. Under stable conditions, growers commonly achieve multiple harvest cycles, with the first flush usually being the largest and subsequent flushes continuing until the substrate is spent. This makes the kit efficient and rewarding compared to smaller grow boxes.

The kit is also well suited to beginners. It requires no inoculation, no advanced sterilisation, and no specialist equipment. The process mainly involves placing the kit in a clean environment, maintaining proper humidity and temperature, and allowing fresh air exchange. The included grow bag with integrated filters helps regulate airflow and humidity, reducing the likelihood of problems during the grow.

Because the substrate is professionally prepared and fully colonized, the kit is relatively resilient and less prone to contamination when basic hygiene is followed. The strong, established mycelium quickly dominates the substrate, which helps prevent unwanted organisms from taking hold. This makes it more forgiving for first-time growers who are still learning optimal conditions.

Overall, the McKennaii Cloud 920 XL is a solid choice for anyone looking for a simple setup with high yield potential, a low learning curve, and the ability to enjoy multiple flushes from a single kit. It balances productivity and ease of use, making it especially attractive for beginners who still want impressive results. (Posted on 1/19/2026)

Amazing first flush + Very dense mushrooms Review by Danny

Rating

This kit is great. First pins appeared 5 days after receiving the kit. Harvest was 9 days later. I had a lot of side pins but it was quickly resolved by flipping the mycelium block on it's side in the tray inside the bag. First flush was 363g fresh which is great for a first flush. The mushrooms are super dense and heavy. As for the effect they're perfect for microdosing as that's the only test I've given them. (Have yet to try a larger dose) but the potency is good enough for me to feel a micro dose without being overwhelmed. I love it. Great experience so far, and I'm about to harvest my second flush. Thanks once again to MMS team for the guidance and assistance. (Posted on 12/10/2025)