How to fertilize plants growing in water

I have several lovely plants growing in water only – in clear jars in a windowsill. I’m wondering how to fertilize a few that aren’t doing so well. Are there any home remedies you’d recommend – i.e. diluted green tea mixed in, finely crushed egg shells in the water, epsom salts in the jar, etc.? These are all tips for fertilizing potted plants, but I need to help out those in clear glass jars without overpowering them and the water they are in and without making the jar look gross.

Thanks!

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1 Comment To "How to fertilize plants growing in water"

#1 Comment By Downtoearthdigs On 08/26/2016 @ 10:03 pm

We recommend a water soluble fertilizer.
Here is a link with more information.

https://www.gardeningknowhow.com/garden-how-to/projects/growing-houseplants-in-water.htm ^[1]

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