I want to put the pointsettia (misspelled i think) in my fish tank. What I want to do is to make a rock bowllike I did for my lucky bamboo and put the plant in it. I do not think that the thing is fully aquatic that is why only the portion with the roots will be in the water. Here'smy plans: Make rock bowl up to the surface. Place nonfertilized soil in the bowl. Place plant into soil. Because the rocks ar not water proof, water will be able to go in and out, but keep fish out. I did this for the lucky bamboo. And I think that it will work for the Pointsettia. For those whom are never heard of it, it is better known as the Christmas plant. I have hasd sucess with growing these in pots.