Photo and text from RipSnort

These are Treasure Coast spores from PF. I took a fully colonized cake, cut it in to 4 equal parts, and then cased the broken up cake quarters. Each one of thoes pans only has 1/4th of a cake in them.

BIOLOGICAL EFFICIENCY (from Fungi Perfecti Catalog)

Biological Efficiency is a term frequently used in the mushroom industry to describe yield potentials of mushrooms from various agricultural by-products (straw, sawdust, sugar cane bagasse, banana fonds and coffee plant wastes, to name a few). This formula was first developed by the Button mushroom (Agaricus) industry.

Simply put, a yield of 1 lb. of fresh mushrooms from 1 lb. of dry substrate is considered to be 100% Biological Efficiency. Since mushrooms are approximately 90% water and the base substrate is typically raised to 75% moisture, 100% Biological Efficiency is equivalent to saying that 25% of the wet mass of the substrate is converted into fresh mushrooms.

Although such yield efficiencies are commonly achieved by experienced growers, many choose not to "chase the optimum", as their growing rooms can be better utilized by cycling in fresher material.

PF's comments

With some simple math and a little analysis, it can be readily seen that PF substrate is well over 100% "Biological Efficiency". RipSnort reports that his Treasure Coast shroom fruiting was had by quartering a PF cake and using the 4 pieces in seperate containers in which the quartered pieces were cased. This means that each fruiting tray above contains about 1/16 of a cup of brown rice powder and about twice as much vermiculite, plus the casing.

In a normal PF 1/2 pint cake, there is about 31 grams of brown rice powder (1/4 cup) and about 17-20 grams of vermiculite (1/2 - 2/3 cup) which adds up to about 50 grams dry weight. It can be conservatively stated that a properly cultivated PF 1/2 pint cake can produce (with several flushes) at least 10 grams of dry shrooms (100 grams wet weight). By using the above biological efficiency formula - this equals an easy 200% biological efficiency for that 1/2 pint PF cake (50 grams of dry substrate producing 100 grams of wet shrooms is twice efficiency - the wet shroom weight is twice the weight of the dry substrate, or in other words - 200%).

This amazing ability of cubensis shroom races to fruit on PF substrate has made the PF TEK the new fundamental of cubensis shroom cultivation. The PF TEK can be used straight PF style (mini culture) to get great fruitings of diverse cubensis races, or can be utilized in more mega style cultivations with trays or larger containers with more massive substrate amounts (compared to PF style Mini culture). What is being demonstrated at various mycophile web sites is PF substrate being mixed with various grains, soils and substrates with impressive fruitings on display. A certain percentage of PF substrate with any kind of cubie substrate results in big fruitings. AND, when PF substrate is used in these mega cultivation teks without the additional grain, fruitings are just as good, if not better. The RipSnort Treasure coasts are proof of the magic of the PF formula (brown rice powder and vermiculite).

The Discovery of the PF magic formula

Many years ago, PF grew cubies on many substrates and found brown rice to be the best grain for fruiting. The problems associated with using brown rice was that it was sticky when cooked up and unshakeable in quart style spawn jars. This creates many problems which thwarts the fruiting power of brown rice. In 1978, Dr Stephen Pollock published his book "Magic Mushroom Cultivation" and it featured a brown rice cake method using quart jars and growing the shrooms inside the jar. This tek has many flaws but had great potential.

Then in late October 1981, PF attended the Paul Stamets and Jeff Chilton Myco Media shroom conference at Orcas Island Washington. During a Stamets lecture, Stamets mentioned mixing vermiculite or perlite into grain substrates to get a better and easier shakeability. It was like a lighting bolt that hit PF, as he busily scribbled down some notes about this substrate mixing concept.

PF went home and began a series of experiments combining these two ideas (Pollocks rice cakes and Stamets vermiculite mixtures) which resulted in the PF TEK magic substrate formula, which has become the new fundamental magic mushroom growing and culturing medium.

Grow Mushrooms from Spores
PF-Tek for Simple Minds PF-Tek voor de gewone man | La PF-Tek pour les nuls PF-Tek für einfache Gemüter | PF-Tek απλ?ς λογικ?ς | PF-Tek Senza Fatica | PF-Tek iesacejiem | PF-Tek Paprastoms Mintims | PF-Tek for Lavpanner | PF-Tek pentru oameni simpli | PF-Tek na jednostavan nacin | PF-Tek za telebane | PF-Tek para Mentes Simples | PF-Tek för latmaskar |
Laminar Flow Hood - Build a HEPA filter flowhood | Hotte de ventilation laminaire - Construire une hotte avec un filtre HEPA |
Psilocybe azurescens outdoor cultivation | Culture extérieure du Psilocybe azurescens | Psilocybe azurescens buitenkweek |
Grain for Simple Minds | Graan voor de gewone man | Método para torpes de preparación de grano | Granaglie Senza Fatica | Le Grain pour les nuls | Grudai? |
Importance of Gas Exchange | Het belang van gaswisseling | Oro kaitos svarbumas | L’Importance des Échanges de Gaz |
Polyfil filter lid for Simple Minds | Polyfil filterdeksels voor de gewone man | Polyfill for Simple Minds italiano | Método para torpes de elaboración de filtros de fibra de poliéster | Dangtelis su filtru | Couvercle avec filtre Polyfill pour les nuls |
Pouring Agar for Simple Minds | Agar uitgieten voor de gewone man | Versare l'Agar Senza Fatica (...e senza condensa) | Método para torpes de llenado de placas petri con agar | Couler l’Agar pour les nuls |
Cloning for Simple Minds | Klonen voor de gewone man | Método para torpes de clonación de setas | Le clonage pour les nuls | Clonagem para Mentes Simples | Klonavimas |
Pressure cooker test | Snelkookpan test | Test della pentola a pressione | Test para comprobar el correcto funcionamiento de ollas a presión | Teste para a Panela de Pressão | Test de cuiseur sous pression |
Pressure Cooker Use |
Homemade Tyvek filter discs test |
Mycelium Inoculation Technique | Technique d'Inoculation de Mycélium |
Casing PF-Cakes | Het Bedekken van PF-Cakes | PF-Tek pyrageliu aptaisymas | Casing pour gâteaux PF-Tek | Casing pentru prajituri PF