Hello, i've noticed that the ingame Factoriopedia entry for the slipstack polyps is missing line for "Grows into". While that evidently don't effect the functionality of the mod, i still thinks its a minor bug that should be fixed. Oddly enough the slipstack entry shows that it grows from Slipstack polyps.

On a side note: the description in info.json miss spells the Slipstack polyps as Splitstack polyps. :)
I also think you should consider following the example of On Wayward Seas and change the name of the slipstack grown for polyps to "Cultivated Slipstack" to avoid confusion with the naturel occurring plant.