Yes they do float if not anchored correctly. Solution: dry off the base of the bulb, use aquarium safe glue and glue it to a rock, once placed in the tank, cover the rock/roots with substrate until about a third of the bulb is buried. (I simply bought a bag of black pebbles from Loweﾒs, make sure they are untreated/unpolished, you could also use driftwood etc) you can glue about 5 or 6 plants per rock then youﾒre also able to try different locations throughout your tank easily! I bought these for my 125 gal with 8ﾔ comet goldfish. The leaves of this plant are strong yet flexible. My fish will break the stems of Amazon swords, but so far they havenﾒt been able to break these. (They also havenﾒt eaten them, presumably because theyﾒre an onion) the ones I received were EXTREMELY healthy, nice roots, the majority are 16ﾔ+ with many being 20ﾔ+ extending to the top of my tank! Smallest was about 12ﾔ Iﾒd recommend this plant.