I have 2 Avocado pits, mounted on my planted tank with 4 Shishkabob skewers holding them up 1/2-way out of the water. Haven't rooted yet, but won't be long. They grow in tropical climates, low-light.
Are you sure? Never figured avocado being low light. When I used to live in Hawaii, all the avo trees I've ever seen grew in full sunlight