Average healing time is seven to 10 days, as this is the amount of time it takes for new tissue to grow to cover the exposed socket. Congiusta, M. A. and A. Veitz-Keenan. Evidence-Based Dentistry 14.3 (2013): 86. Daly, B., et al.
Our native plant, the Jointed Glasswort (Salicornia herbacea, Linn.), was, as its name implies, also regarded as of value in the manufacture of glass. ---Description---It is a low-growing, annual herb, common in salt marshes and on muddy seashores all round the British Islands and was much used for this purpose.
I think it's a great background and floating plant. Hornwort is a fast growing, hardy species. I can grow it in 0.4 W/L and I think it can grow in less than that. It has no roots, you can use a plant weight to anchor it, or bury the very tip in the ground.