Thanks Juanpax
If you need any help with paintfx post it and I will help if I can there is not a lot about it out there, most are about how to adjust brush stroke and scaling. Gone full circle with this one I tried caustics (need render farm), parti_volume shader (not getting the results I wanted)now back to the volume shader will do some more coral, waves to look better and sea weed. As some one request bubble need some thing to be thrown into the water?..................dave

Edit: I think the waves look a bit better now