Blyxa japonica divides very similiar to that. Mine tripled in 1.5 months. FYI though, these are medium light plants... so you would need to upgrade your current fixture before taking any on.
My Vals spread like weeds by runners, looks just like a Spider plant too!
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80 gal FW with 30 gal DIY wet/dry/sump.
9 fancy golds, 1 hillstream loaches, 1 rubber-lip pleco (C. thomasi), 3 SAEs, small school of white cloud minnows, planted.