{"product_id":"boomer-shroomer-dry-bulk-substrate-for-mushrooms-cvg-mix-coco-coir-vermiculite-gypsum-9-10-lb-yield","title":"Boomer Shroomer Dry Bulk Substrate for Mushrooms — CVG Mix (Coco Coir, Vermiculite, Gypsum), 9–10 lb Yield","description":"\u003cp\u003e\u003cstrong\u003eBoomer Shroomer Dry Bulk Substrate is a ready-to-mix CVG blend (coco coir, vermiculite, gypsum) formulated to produce about 9–10 pounds of pasteurized substrate for monotubs and other bulk fruiting systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis dry bulk substrate package contains measured components to simplify spawn-to-bulk transfers and reduce preparation time. The mix pairs the water-holding capacity of coco coir with vermiculite’s aeration and gypsum’s pH buffering to create a balanced substrate that hydrates predictably and supports consistent colonization when pasteurized correctly. It arrives dry and compact, making storage and transport easy until you’re ready to hydrate.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I prepare this substrate for a monotub grow?\u003c\/h3\u003e\n\u003cp\u003ePreparation is straightforward: hydrate with boiling water, let it sit to reach field capacity, then pasteurize for about 24 hours. Once cooled and drained to the right moisture level, mix with colonized spawn and load into your monotub or other fruiting container.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdd roughly 16 cups of boiling water to the dry mix in a 5-gallon bucket.\u003c\/li\u003e\n  \u003cli\u003eStir, cover, and allow the material to absorb heat for 30–60 minutes.\u003c\/li\u003e\n  \u003cli\u003ePasteurize the hydrated substrate for 24 hours, cool, then mix with spawn and case as needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat yield can I expect from this package?\u003c\/h3\u003e\n\u003cp\u003eThis dry CVG blend hydrates to roughly 9–10 pounds of usable pasteurized substrate — commonly enough for two standard monotub setups or multiple smaller fruiting vessels. Yield depends on how compactly you pack tubs and the spawn ratio you use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDry components: 500g coco coir, 500g vermiculite, 100g gypsum.\u003c\/li\u003e\n  \u003cli\u003eHydrated output: about 9–10 lbs of substrate when mixed to field capacity.\u003c\/li\u003e\n  \u003cli\u003eTypical use: two full monotubs or several trays\/filter bags depending on volume per container.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy does this CVG blend work well for bulk substrate?\u003c\/h3\u003e\n\u003cp\u003eThe combination of ingredients balances moisture retention, aeration, and chemical stability—helping mycelium spread evenly without becoming anaerobic. This makes it a reliable choice for both new growers and experienced cultivators adapting spawn-to-bulk (S2B) methods.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCoco coir: holds water while resisting compaction.\u003c\/li\u003e\n  \u003cli\u003eVermiculite: creates air pockets to improve gas exchange.\u003c\/li\u003e\n  \u003cli\u003eGypsum: stabilizes calcium and pH for a consistent substrate environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow flexible is this substrate for different growing methods?\u003c\/h3\u003e\n\u003cp\u003eThe dry CVG blend is versatile: hydrate and pasteurize it for monotubs, spread it in trays for bulk fruiting, or fill filter bags for sealed systems. It’s tolerant of standard spawn ratios and can be mixed with supplements if you prefer enriched formulas.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks well in monotubs, trays, and filter bags.\u003c\/li\u003e\n  \u003cli\u003eCompatible with typical S2B spawn ratios and procedures.\u003c\/li\u003e\n  \u003cli\u003eCan be used as-is for a clean, simple bulk substrate or amended by experienced growers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Growers who want a consistent, pre-measured CVG base without weighing and blending raw ingredients. Ideal for beginners who want a reliable introduction to pasteurized bulk grows and for seasoned cultivators seeking a convenient, space-saving dry mix that hydrates to a predictable volume. For product questions or assistance, contact Ashley at ashley@boomershroomer.com.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much hydrated substrate will this mix make?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It hydrates to about 9–10 pounds of pasteurized substrate, typically enough for two standard monotubs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the recommended hydration method?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Add ~16 cups boiling water to the dry mix in a 5-gallon bucket, let absorb, then pasteurize for roughly 24 hours.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Boomer Shroomer","offers":[{"title":"Default Title","offer_id":56832951746900,"sku":"B0C21QDHXX","price":70.41,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/boomershroomer-front-package.jpg?v=1787035732","url":"https:\/\/gardenluxe.co.uk\/products\/boomer-shroomer-dry-bulk-substrate-for-mushrooms-cvg-mix-coco-coir-vermiculite-gypsum-9-10-lb-yield","provider":"Gardenluxe Uk","version":"1.0","type":"link"}