There are several growing media used in the hydroponic There are several growing media used in the hydroponic There are several growing media used in the hydroponic industry, and their application depends on personal prefer- industry, and their application depends on personal prefer- industry, and their application depends on personal prefer- ence and on the type of hydroponic system employed. ence and on the type of hydroponic system employed. ence and on the type of hydroponic system employed. Here is a list of the most popular media and how they Here is a list of the most popular media and how they Here is a list of the most popular media and how they might be used: might be used: might be used: Hydroton Hydroton Hydroton Hydroton or clay aggregate is expanded round clay pellets and Hydroton or clay aggregate is expanded round clay pellets and Hydroton or clay aggregate is expanded round clay pellets and is one of the more widely used media on the market. It can be is one of the more widely used media on the market. It can be is one of the more widely used media on the market. It can be used on its own in aeroponics and deep water culture or used on its own in aeroponics and deep water culture or used on its own in aeroponics and deep water culture or combined with other media in ebb and flow or top drip combined with other media in ebb and flow or top drip combined with other media in ebb and flow or top drip systems. It allows maximum drainage and aeration. Hydroton systems. It allows maximum drainage and aeration. Hydroton systems. It allows maximum drainage and aeration. Hydroton can also be re-used if cleaned and sanitized properly with can also be re-used if cleaned and sanitized properly with can also be re-used if cleaned and sanitized properly with hydrogen peroxide. hydrogen peroxide. hydrogen peroxide. Rockwool Rockwool Rockwool Rockwool is another industry standard. It is derived from Rockwool is another industry standard. It is derived from Rockwool is another industry standard. It is derived from rhyolite that has been melted and spun into a fiberous form, rhyolite that has been melted and spun into a fiberous form, rhyolite that has been melted and spun into a fiberous form, reminding many users of fiberglass. It is non-degradable and reminding many users of fiberglass. It is non-degradable and reminding many users of fiberglass. It is non-degradable and has a one time use. It comes in many different sizes and has a one time use. It comes in many different sizes and has a one time use. It comes in many different sizes and configurations to accomodate your particular growing needs. configurations to accomodate your particular growing needs. configurations to accomodate your particular growing needs. Perlite Perlite Perlite Perlite is a medium that is commonly found in soiless mixes. It Perlite is a medium that is commonly found in soiless mixes. It Perlite is a medium that is commonly found in soiless mixes. It is made from puffed glass and is very light. Be careful using is made from puffed glass and is very light. Be careful using is made from puffed glass and is very light. Be careful using this media by itself, as it will float. this media by itself, as it will float. this media by itself, as it will float. Vermiculite Vermiculite Vermiculite Vermiculite is a natural mined medium. It has been used in the Vermiculite is a natural mined medium. It has been used in the Vermiculite is a natural mined medium. It has been used in the hydroponic industry for a long time. It has great water and hydroponic industry for a long time. It has great water and hydroponic industry for a long time. It has great water and nutrient holding capacity, and is a standard component in nutrient holding capacity, and is a standard component in nutrient holding capacity, and is a standard component in most soiless mixes. most soiless mixes. most soiless mixes. Coconut Coir Coconut Coir Coconut Coir Coconut Coir is a medium that is becoming very popular in Coconut Coir is a medium that is becoming very popular in Coconut Coir is a medium that is becoming very popular in hydroponics. It works best when combined with another hydroponics. It works best when combined with another hydroponics. It works best when combined with another medium such as hydroton. Coir has excellent nutrient and medium such as hydroton. Coir has excellent nutrient and medium such as hydroton. Coir has excellent nutrient and water holding capacity. water holding capacity. water holding capacity. Silica Stone Silica Stone Silica Stone Silica Stone is one of the newest media in this industry. It is Silica Stone is one of the newest media in this industry. It is Silica Stone is one of the newest media in this industry. It is derived from potassium silicate. This medium can improve derived from potassium silicate. This medium can improve derived from potassium silicate. This medium can improve yields by increasing plants’ resistance to stress. yields by increasing plants’ resistance to stress. yields by increasing plants’ resistance to stress. Here are some media mixes that we recommend for use in Here are some media mixes that we recommend for use in Here are some media mixes that we recommend for use in ebb and flow or top drip hydroponic systems: ebb and flow or top drip hydroponic systems: ebb and flow or top drip hydroponic systems: • 60-80% hydroton to 20-40% coconut coir • 60-80% hydroton to 20-40% coconut coir • 60-80% hydroton to 20-40% coconut coir • 70% hydroton to 30% small rockwool cubes • 70% hydroton to 30% small rockwool cubes • 70% hydroton to 30% small rockwool cubes • 50% hydroton to 50% silica stone (aeroponic friendly) • 50% hydroton to 50% silica stone (aeroponic friendly) • 50% hydroton to 50% silica stone (aeroponic friendly).