Hydroton 10 liter bag

This is a good starter for a few bubblers. :slight_smile:

https://www.amazon.com/Hydroton-10-L-Original-Fertilizers/dp/B01KYYZ9DE/ref=sr_1_3?ie=UTF8&qid=1497385822&sr=8-3&keywords=hydroton+expanded+clay?tag=greenrel-20

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