I have an outside fountain and it keeps growing algae. It's a big one so can't just pop it apart and clean it up. Was going to use (No more algae) to stop it but can't do that since the birds and my dog drink out of it. Can't use bleach for same reason. Can anyone tell me what I can do to clean this up and keep it that way without making the animals sick and having to sweet talk my husband into taking it apart so I can clean it to have him have a messed up back for two days afterward.