SKU: 35335439178

Exo Terra Sub Stratum - Bioactive Volcanic Substrate

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Description

Exo Terra Sub Stratum - Bioactive Volcanic Substrate3 Ways to use Sub Stratum: As a sole substrate As a drainage layer Mixed in with other substrates Sole Substrate When Exo Terra's Sub Stratum is used as the sole substrate, add a layer of 2,5 5 cm (1 2 in) to the terrarium. The live bacteria will activate when the substrate comes in contact with water or waste. The organic matter such as left over food and animal waste will decompose over time. The absorbing properties of volcanic ash will eliminate

3 Ways to use Sub Stratum:

  • As a sole substrate
  • As a drainage layer
  • Mixed in with other substrates

Sole Substrate

When Exo Terra's Sub Stratum is used as the sole substrate, add a layer of 2,5 - 5 cm (1 - 2 in) to the terrarium. The live bacteria will activate when the substrate comes in contact with water or waste. The organic matter such as left over food and animal waste will decompose over time. The absorbing properties of volcanic ash will eliminate odours by trapping the decomposed materials. Rinse the Sub Stratum and replace partly every 12 months.

Drainage Layer 

Add a top layer of biological substrate to the Exo Terra's Sub Stratum layer for optimal bioactivity and drainage. Plants can be secured in the top layer (eg. Exo Terra's Plantation Soil) while their roots will thrive in the sub layer of Sub Stratum - resulting in optimal growth.

Additionally, an inorganic layer can be added first for even better drainage (Exo Terra's BioDrain) to allow excess water to flow through the substrate to avoid saturation and anaerobic bacteria to outcompete the beneficial bacteria in the Sub Stratum substrate. Use the BioDrain Mesh to separate the BioDrain layer from organic matter to penetrate the underlying layer.

Use a top layer of leaf litter to provide dry areas, shelter and dwelling surfaces for all organisms in the terrarium. In the meantime it will prevent evaporation of the underlying layers.

Mixed-in

The secret to growing healthy plants begins with the soil. Naturally, healthy soil contains living microorganisms — from bacteria to fungi, protozoa and arthropods. Together they form a choreographed exchange from the recycling of nutrients to the decomposition of organic materials.

By mixing the Sub Stratum with other organic substrates, you enrich any substrate with the required minerals like calcium, nitrogen, potassium and phosphorus. It also aids in the water retention capacity and provide adequate air supply to the roots.

Only use tap water treated with Aquatize (PT1979) in bioactive planted terrariums to remove heavy metals, chlorine, and chloramines.

The regular use of Turtle Clean (PT1998 or PT1999) to add extra beneficial organisms to the terrarium water will support the biological filtration capabilities.

Key Features :

  • Natural bioactive soil
  • With live beneficial bacteria
  • Keeps the terrarium clean & healthy
  • Eliminates ammonia & odours
  • Great drainage capabilities
  • Ideal for bioactive planted terrariums
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35335439178

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4.7 ★★★★★
Based on 19 reviews
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Rickter
Natrona Heights, US
★★★★★ 5
Nice shape, highly polished, 200ml, 5+ stars.
Size: 6.8oz/200ml Silver
Very nice, highly polished with the feel of quality for the price. I'm very much an amateur barista. A trip to Italy inspired me to buy an espresso machine. I gained a whole new respect for coffee in Europe. The pitcher with my machine was too big to copy the Euro style cafe. Small quantities of milk were too shallow to froth properly even when tilting. The barista I watched in Italy was using a small pitcher so I decided to buy the 200ml version. It's a perfect size allowing a small amount of milk to be deep enough to froth. I brought back some roasted Italian coffee beans back to USA and wow! I'm very much a beginner but having fun.
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Reviewed in the United States on December 3, 2025
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Verified Purchase
Coco
Bozeman, US
★★★★★ 5
Incredible quality, just buy the right size (I did not)
Color: A Silver, Size: 12 Ounces, Color: A Silver, Size: 12 Ounces
For anyone interested in this product, here’s a quick guide (from a coffee snob) • 12oz (what I got, pictured) - fine for small drinks (standard mug) at home. one drink, and you never plan on using this for any larger drinks • 20oz - the home kitchen sweet spot. if you’re filling a Stanley or Yeti traveler this is probably your size. One caveat, you’ll have no wiggle room and will be maxing your milk froth to the brim. if you like cappuccino’s get the 32oz. • 32oz - this is what’s behind the counter at every coffee shop you’ve ever been to. if you’ve worked a bar shift at Starbucks you’ve held this pitcher a thousand times. If you like a lot of foam (cappuccinos) i would suggest anyone serious about at home use to get this one. I’ve worked in coffee shops since I was like 16 and I still ordered the 12oz like a complete idiot. I posted comparison photos if you want a good laugh. The pitcher is smaller than a regular coffee mug. Not a travel mug, not a big mug, just a normal everyday mug. Bigger than the pitcher. I measured nothing and paid the price. Returning it and ordering the 32oz of the same exact pitcher so that should tell you the quality is legit. Feels exactly like what we used behind the bar, well made, solid, nothing cheap about it. Just bought the wrong size. For anyone also about to make my mistake: the 12oz works if you’re making one small drink at home and that’s it. The 20oz is probably the right call for most people, fills a Stanley or Yeti no problem. The 32oz is the coffee shop size, if you’ve ever worked a bar at Starbucks or anywhere else you’ve used that size a thousand times and it’ll feel right immediately. Great pitcher. Wrong size. My fault entirely.​​​​​​​​​​​​​​​​
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Reviewed in the United States on May 10, 2026
G
Verified Purchase
G. Tompkins
Natrona Heights, US
★★★★★ 5
Excellent in every respect, regardless of price. Just get the right size for your needs.
Color: A Silver, Size: 12 Ounces
Over time I've accumulated several milk steaming pitchers, a few of which were 3 or 4x the price, and yet I keep coming back to this one. The build quality is surprisingly high, the volume markings are very clearly etched on the inside and easy to read, it has a nice no-drip spout for pouring, and it still looks as good as new after daily use; No sign of wear and tear or staining on the metal even with high heat milk steaming. This is one of those rare low price/high quality products I only rarely run across.
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Reviewed in the United States on June 8, 2026
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Verified Purchase
Home And Travel With Midz!
New York, US
★★★★★ 5
Lovely milk pitcher
Color: A Silver, Size: 12 Ounces, Color: A Silver, Size: 12 Ounces
This milk pitcher is so durable and light weight. Its great value for money and feels expensive. Its easy to use and also easy to clean. It pours very well and fits perfectly on my coffee machine.
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Reviewed in the United States on March 2, 2026
Z
Verified Purchase
Zach
Birmingham, US
★★★★★ 5
Great for single drinks, high quality
Color: A Silver, Size: 12 Ounces
High quality milk frother pitcher. A bit smaller than I expected but great for making single size drinks. High quality stainless that holds heat well and is easy to clean. Great value for the price for making quick single drinks with your espresso maker
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Reviewed in the United States on January 4, 2026

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