I don't see anything wrong with snails.
They are easily controlled by careful feeding, take care of tank cleanup, take care of any algae that may try to grow, ect ect
In both my planted tanks I keep little " pest " snails, They don't touch the plants, and they happily keep the entire tank clean and healthy.
Pest snails are only pest-like when people overfeed and cause a population explosion that could number hundreds, or even thousands.
just feed carefully and you will have a conrolled, important block in your mini ecosystem
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