What kind of fertilizer can I use for hydroculture plants?
There are hydroponic fertilizers available that provide plants with an appropriate balance of necessary nutrients, readily available at hydroponics shops if you have any near you. I have also been using the commercial houseplant fertilizer Miracle Gro regularly with satisfactory results. I dilute it to 1/10th the strength. Miracle Gro advises that I add 10 20 drops per liter, I add 1 or 2.