Using particle FX - cannot seem to get them going

First - thanks to anyone willing to help with this. No free puppies of beer for help - just a hearty "thank you very much!"

I have been messing around with this: https://www.assetstore.unity3d.com/#/content/7891
And trying to get particle effects to play when a cell is taken. I am using this: https://www.assetstore.unity3d.com/#/content/4010 for the FX.

I found a few threads, tried a few things on my own.. and I just cannot seem to get the FX to show up..
I call the convert_to_position from another script with the kit to get the x/y coords.. and try to instantiate a GameObject that is declared here:

public GameObject destroyMagnet;

Then I drag a particle prefab over to the inspector.
The game "works", the CFX_ElectricMesh prefab shows as a (Clone) in the hierarchy when the function is called, then vanishes when the animation is completed.. but I never actually *see* it.

The specific code I am using is:

Code (csharp):

1.  
2.             destroyMagnet.renderer.sortingLayerName = "Foreground";
3.             destroyMagnet.renderer.sortingOrder = 2;
4.             Instantiate(destroyMagnet,CHelper.convert_to_position(obj),Quaternion.identity);
5.  

and here is the entire function:

Code (csharp):

1.  
2. IEnumerator reproduce(short cell)
3.     {
4.         CPlayer current_player = this.players[this.current_player_index];
5.         CPlayer other_player = this.players.Find(obj => obj.player_index != this.current_player_index);
6.        
7.         clear_available_attacking_cells();
8.         yield return new WaitForSeconds(0.5f);
9.        
10.         this.board[cell] = current_player.player_index;
11.         current_player.add(cell);
12.  
13.         yield return new WaitForSeconds(0.5f);
14.        
15.         // eat.
16.         List<short> neighbors = CHelper.find_neighbor_cells(cell, other_player.cell_indexes, 1);
17.         foreach (short obj in neighbors)
18.         {
19.             Debug.Log ("OBJ: " + obj);
20.             this.board[obj] = current_player.player_index;
21.             current_player.add(obj);
22.             Debug.Log ("POS: " + CHelper.convert_to_position(obj));
23.             destroyMagnet.renderer.sortingLayerName = "Foreground";
24.             destroyMagnet.renderer.sortingOrder = 2;
25.             Instantiate(destroyMagnet,CHelper.convert_to_position(obj),Quaternion.identity);
26.             other_player.remove(obj);
27.             //Destroy(destroyingParticle, 1f);
28.             yield return new WaitForSeconds(0.2f);
29.         }
30.     }
31.