I am not quite sure what you are saying, but to add new scenery that has been put in the addon scenery folder do the following.:
If you made a folder for the water effects Make sure the folder has a scenery & texture subfolders.
All of the bgl files go into the scenery folder every thing else will go into the texture folder
When you start up FS go the the settings menu select library then select add new scenery. Then select the addon scenery folder than the folder that has the water effects in it and click add
If you try to open the scenery subfolder you have gone to far you just need to go the the folder that has the scenery subfolder in it .
I hope this helps
