Hey Kellyraya, it worked! But you can get closer as far as the photo showing up in your post.
This is what you're looking for on Photobucket:
If you highlight and copy the code in the "IMG" box and paste it in your post, the photo should show up.
And when you click on one of your photos, this box will show up on the right of your screen. If you put the little hand over the "IMG" box, it will automatically copy, then you can "paste" it in your message.
And, there may be a better way but it seems to work for me.
Regarding your post, I too had a major Duckweed (DW) problem. They will blanket your pond on a calm day and they reproduce VERY, VERY quickly! For me I used the chemical Fluridone but it's very expensive and a complete vegetation killer (possibly).
Hopefully the experts will be by soon to help address your questions.