The perfect amount of substrate to create your own terrarium at home, check out our wide range of DIY terrarium supplies here **This substrate bundle includes;** Drainage Layer - Semi Hydro Mix Separation Layer - Sand Purifying Layer - Activated Charcoal Soil Layer - Terrarium Soil All of our substrates are premium quality and supplied by Soil Ninja **How to measure which size bundle you require:** So we have got very technical with our measuring and we have used a handy pint glass as we have assumed most people have access to one at home. Get your vessel and pour water into the vessel up to the height in your glassware you would like the substrate to come up to. _Please be ware that your plants, moss and decorative layers will sit above this._ Once you are happy with the level, pour the water into a pint glass to measure which bundle would be the right amount for your vessel. Fingers crossed we haven't made this overly confusing, please get in touch if you need further help or advice.