You have no items in your shopping cart.
Mac Galactic Cloud920® XL Ready-to-grow bag
Mac Galactic is a JMF × Melmac cross — fast-colonising, thick-stemmed, and rated ★★★★★☆ (5/6) for potency. Created by Denver Spore Company, refined by Full Canopy Genetics. Expect your first pins within two weeks.
Availability: In stock on
€45.00
Related
Check items to add to the cart or select all
Product Description
Details
Mac Galactic is the fast one. Where Jack Frost makes you wait weeks, this strain colonises aggressively and throws its first pins in as little as two weeks. It's a cross between Jedi Mind Fuck and Melmac — two strains known for speed and size respectively — and the combination delivers exactly what you'd expect: dense canopies, thick stems, and a potency rating that puts it above most cubensis in the catalogue.
Part of the Cloud920® Genetic Series — Hybrid Fusion
Origin & Genetics
Mac Galactic was originally isolated by Eric Burden of Denver Spore Company as a cross between JMF (Jedi Mind Fuck) and Melmac. Eric selected for a balance of size, potency, and consistency — and then Full Canopy Genetics took it further, refining the isolation for canopy density and biological efficiency. From JMF it inherits its aggressive colonisation speed and reliable flush potential. From Melmac — a strain loved for its massive, phallic fruit bodies and above-average potency — it inherits its sheer size and thick-stemmed morphology. The result is a strain that never drops spores, consistently produces large canopies, and rivals some of the strongest cubensis available.
Why Choose Mac Galactic?
- Strength: ★★★★★☆ (5/6) — high potency that rivals many 6/6 strains. Full Canopy Genetics describes its alkaloid content as "incredibly potent." Not one to underestimate.
- Fast and aggressive — first pins typically appear within 14–21 days. One of the quickest strains in the Cloud920 range.
- Thick, dense flushes — large fruit bodies with caps up to 8 cm and heavy stems. Expect 400–800g fresh across multiple flushes.
- Documented pedigree — created by Eric Burden (Denver Spore Company), refined by Full Canopy Genetics. Traceable genetics, no guesswork.
What's in the Box
- 1x Cloud920 Grow Bag — 2000cc pre-colonised substrate with active Mac Galactic mycelium. Integrated micron filters provide passive air exchange and contamination protection.
- 1x Large bag clip — to seal the bag securely between ventilation sessions.
- 1x Rubber band — place around the substrate block to prevent unwanted side growth.
How the Cloud920 Grow Bag Works
- Open once — fold the bag open in a clean space to allow fresh air in and trigger pinning.
- Place and wait — put the bag in indirect light at 23°C. No soaking, no misting required in the first phase.
- Air daily from week 2 — briefly open and refold the bag once a day to encourage pin development.
- Harvest and repeat — twist and pull mushrooms at the base before caps open fully. Rehydrate and repeat for additional flushes.
Instructions
The Cloud920 Ready-to-Grow bag does not include printed instructions. Find the full step-by-step guide here: Cloud920 Grow Bag Instructions.
Additional Info
Additional Info
| Productcode | MCS.GKC920.MGAL-XL |
|---|---|
| Weight (KG) | 1.4000 |
| Mushroom Strain | Mac Galactic |
| Brand | Cloud920® Grow Bag |
| Difficulty | Very Easy |
| Size | Extra Large |
| Species | Psilocybe cubensis |
| Origin | United States |
| Potency | High |
| Optimum cultivation temperature | 23ºC |
| Yield (from) | 200 grams |
| Yield (to) | 800 gram |
| Water Spray Needed | Yes |
Customer Reviews
18 Item(s)
per page
- Joined the 100g club with these! Review by Lene
-
I’ve just harvested some huge mushies with this kit and joined the 100g club with one chunky one! Was really quick to pin and only a few days after pinning was ready for harvest. Really happy with this product! (Posted on 3/21/2026)Rating - Big fat chonky shroms Review by Esmeralda
-
So this is the second time i started to grow a box from cloud920. First time i had Jackfrost and now this MacGalactic. Theese are one of the biggest mushrooms i jave ever grown in these few years now. Havent tried them yet tho. But the growing is easy .set up and eait for magic AMAZING (Posted on 1/27/2026)Rating - Amazing Kit and Experience Review by Panos
-
Amazing grow kit! Very easy to use. I received it in about a week and a half. After two weeks the first pins appeared, and one week later I had large, healthy fruits. I barely had to do anything. I'm now waiting for the second flush.Rating
The mushrooms are very potent, with strong visuals. Highly recommended. An excellent overall experience, from growing to riding the waves. (Posted on 12/6/2025) - Giant Potent Mushrooms Review by Danny
-
This has been my favorite and easiest growbag from the Cloud920's series. I think it took less than a week for the pins to start, and the fruits were enormous and beautiful. I believe I got around 30g dried on my first flush. Going through the second one as we speak. These are very potent. Will definitely be buying the Mac Galactic strain again for sure. Thank you MMS team for your service. (Posted on 12/2/2025)Rating - Great Review by Tom
-
Good yield and great trip. 10/10Rating
(Posted on 11/1/2025) - Good yield and effects Review by Tim
-
Great yield and visuals. Would buy again. (Posted on 11/1/2025)Rating - 10/10 Review by Bojan
-
Big fat mushrooms good yield strong effectRating
customer support was great (Posted on 10/26/2025) - einfach geil Review by uws
-
leicht anzubauenRating
mega Optik (Posted on 10/13/2025) - Great company Review by Melinda
-
I purchased this product to be delivered in Spain. It arrived within a week, packaged very well. It was super easy to set up. I thought I had a problem with the product so I contacted the support team who replied immediately. They were very helpful and gave me loads of information and advice. I am so impressed with this company and will definitely be using them again! (Posted on 10/3/2025)Rating - very good Review by Ivan
-
very good ones. totally recomended (Posted on 9/29/2025)Rating - Sammanfattning: Riklig skörd Review by Istvan-Zsolt
-
Mac Galactic Cloud920®-kitRating
Omdöme: Jag har nyligen provat det för första gången och det var en fantastisk upplevelse. Kitet gav en mycket riklig skörd och jag är helt nöjd med det, även vad gäller innehållet. (Posted on 9/24/2025) - 10/10 Review by Davide
-
The first kit got contaminated but customer support was great and shipped a new one, completely free of charge. This strain is WILD! Definetely recommend. (Posted on 8/18/2025)Rating - Wahnsinn :D Review by AlGoldo
-
Sehr interessante Züchtung. Am 17.07.25 bekommen, heute morgen geerntet. Im Vergleich zu anderen Zuchtkits, eher wenige Früchte. Aber :D, dafür sehr ertragreiche Früchte. Habe jetzt vom ersten Flush 390 Gramm frishe Pilze geerntet. Nur 4 Früchte :o. Einer hat aber dafür 300 Gramm. Zur Wirkung kann ich noch nichts sagen, warte erst das trocknen ab. Der Flush ist auch noch nicht beendet, weswegen jetzt noch ein Aber zum ernten kommt. Die Mykobags sind gut gemeint, ernten sich aber ziemlich schwierig. Die ersten Früchte sind oben gewachsen, was kein Problem darstellt. Alle weiteren Früchte wachsen allerdings, trotz dieses Gummibandes(was meiner Meinung nach nicht wirklich etwas bringt) an den Seiten(side pins) und sogar unten drunter. Was heißt; Ich muss zum Rest der Ernte, den Pilzkuchen, entgegen der Anleitung, aus der Mykobag entfernen. Was auf Grund der Struktur der Mykobag ziemlich schwierig aussieht :(. In den unteren umgefalteten Ecken befinden sich lauter Früchte, weswegen ich die Bag wahrscheinlich aufschneiden muss(habe noch Ersatz). Dafür ein Stern abzug. Trotzdem gerne wieder... :D (Posted on 8/4/2025)Rating - All good Review by Sehuti
-
Few flushesRating
Big fat mushrooms
Good yield
Strong effect (Posted on 7/25/2025) - 10/10 Review by Filip
-
Great product, very strong. (Posted on 7/1/2025)Rating - Very strong Review by Mushbert
-
A beautiful growing mushroom with strong effects.Rating
Big Flushes as well.
Unfortunately always causes Galactic farts
when down coming…
Not recommended for micro dosing, because of its strength. (Posted on 6/27/2025) - belle fructification Review by anthony
-
après avoir essayé les Mycobag de mac Galactic qui n'avaient pas poussé correctement.Rating
ceux de magic mushroom shop sont très bon et bien colonisés.
j'ai eu de beaux fruits en espérant que le deuxième flush sera lui aussi bon . (Posted on 6/6/2025) - Excelente Review by Jon
-
Crecen un poco lento pero muy abundante y grueso. El segundo brote tambien lento pero seguro y muy abundante. Azulean hasta los sombreros. Muy recomendable. (Posted on 5/24/2025)Rating
18 Item(s)
per page
You may also be interested in the following products:
