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farmergiles · 07-19-2010, 05:35 AM

Hydroponic Mediums

Hydroponic mediums are inert and sterile substances that replace the soil in providing your plants support and a place to spread roots. The medium needs to provide this support whilst allowing good drainage and aeration but some level of water retention.

There are two basic types of hydroponics medium, fibrous medium and granulated mediums.

Within each of these categories there are several choices of mediums:

Fibrous Mediums

- Rockwool - slabs
- Greenmix/Goldenwool - shredded (bagged) rockwool
- Coco Coir - available in slabs and bagged

Rockwool is easy to obtain and get good results with but is unpleasant to handle and not exactly environmentally friendly. Try not to handle dry rockwool without respiratory protection- you don't want to inhale the dust.
Coco Coir has similar benefits but is more benign and also bio degradable.

Granulated Mediums

-Expanded Clay Pebbles
-Perlite
-Vermiculite

All the above mediums can be reused for more than one grow as long as there are no pests, excessive algae or salts in them. Sometimes wetting agents are used to revitalise coco.

07-19-2010, 05:35 AM	#34 (permalink)
farmergiles Yahookan Join Date: Sep 2006 Location: Sick of the hatred and the lies Posts: 7,779 Thanks: 2,272 Thanked 3,734 Times in 2,546 Posts	Hydroponic Mediums Hydroponic mediums are inert and sterile substances that replace the soil in providing your plants support and a place to spread roots. The medium needs to provide this support whilst allowing good drainage and aeration but some level of water retention. There are two basic types of hydroponics medium, fibrous medium and granulated mediums. Within each of these categories there are several choices of mediums: Fibrous Mediums - Rockwool - slabs - Greenmix/Goldenwool - shredded (bagged) rockwool - Coco Coir - available in slabs and bagged Rockwool is easy to obtain and get good results with but is unpleasant to handle and not exactly environmentally friendly. Try not to handle dry rockwool without respiratory protection- you don't want to inhale the dust. Coco Coir has similar benefits but is more benign and also bio degradable. Granulated Mediums -Expanded Clay Pebbles -Perlite -Vermiculite All the above mediums can be reused for more than one grow as long as there are no pests, excessive algae or salts in them. Sometimes wetting agents are used to revitalise coco. __________________ Cultivate a stoic calmness *Fuck the Monkeys* Every Kind of Vice Last edited by farmergiles; 07-19-2010 at 11:57 AM. Reason: This was largely cribbed from Sureshot's post