Yo
I don't know why you want artificial if you can have live one but that is just me saying.
I would recommend the jungle val family(normal&spiral).
They can grow extremely long.
I planted mine in a 9 Oz cup filled with sand&dirt and topped of with substrate for the dirt and sand not to come out of cup.
And its doing great.
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I agree. It requires very little light to thrive. The negative is, of course, fish that like to tug on plants. Most fish won't eat val but they will still pull it out.