I can propagate plants the old fashioned way, but many of them are incredibly slow growing. Tissue cultures can yield a dozen viable plants per jar, then I can grow them out in semi hydroponic settings until they’re suitable for putting into a tank (at which point I kind of “drip acclimate” them to their destination tank for a week or two to prevent melting (in which an environmental shock causes foliage to senesce).

I’d like to see interesting mutations out of curiosity, but so far the clones are identical to their parents. I use relatively low-key hormones, so that might be why. I only keep chemicals that won’t harm my kids, more or less.

Many other species can be propagated conventionally, but will grow faster in tissue culture. That's typically referred to as micropropagation, and widely used for aroids (like here), flytraps, cactus, etc. It's also common for aquarium plants, I think because that eliminates the risk of introducing pests.