Lamp Height extension for Short Stories LED Planter

I had this LED Planter gifted to me for a while and it did its job quite well.

One issue one can face with it - If your plant growing higher than a LED lamp on this planter it kinda don't get any sun.

My solution to that is this piece, that can be attached to the bottom of the original planter tube and can be stacked up to 3 times (if the cable length allow it).

Should be printed in orientation showed on picture. This way it does not require any supports.

Any plastic will do. I used PLA.