pH Adjusted Casing Layer | Williams Co Supplies
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pH Adjusted Casing Layer

pH Adjusted Casing Layer

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 pH Adjusted
 No more misting
 Perfect surface conditions
 2 litres / 1kg
Backed by our 30 day money back guarantee
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Maintain perfect surface conditions.

Avoid your bulk substrate drying out, add this on top of your bulk substrate once it is fully colonised.

No more misting.

The high moisture content of the sphagnum moss creates a perfect environment for your mushrooms.

No more contamination.

The high pH level of our casing layer ensures no contamination of Trichoderma (Trich) can occur.

Guaranteed results.

Mushrooms or your money back, our casing layer is covered by our 30 Day Money Back Guarantee.


  • Sphagnum Moss
  • Vermiculite
  • pH Adjusted Water


  • Weight: 1kg
  • Volume: 2 litres
  • Ready to use: Yes
  • Sterilised: Yes
  • Storage: up to 3 weeks in fridge

Delivery Information

Your order will be sent with Royal Mail or Parcelforce, you will receive an email once it has been dispatched. Orders are dispatched within 2 days unless stated otherwise. Plain packaging.

30 Day Money Back Guarantee

We offer a money back or replacement guarantee on all of our products. To claim your replacement or refund please send us photos of the issue to: and we will do our best to help you.