I'd love to hear more about raising guppies in brackish water if you don't mind sharing? Is your water hard or soft? I like a lot of your tanks, love the darker substrate with leaf litter ones.I also have a 20 gallon brackish guppy tank (females). I noticed that my fry color faster in the brackish water than they did in fresh water. I also have 4 zebra nerite snails in here.
Have a couple of tips for photographing these tanks, if you'd like. Give the outside of the glass a clean with some declorinated water and a paper towel before taking the pic, makes it easier to see the fish you're showing, and because the camera will sometimes try to autofocus on the water drop marks rather than looking past them and focusing on the tank/fish. Then when you go to take the photo, stand and point the camera slightly downwards, or stand a little further back to shoot straight on. When you aim the camera upwards towards your tank lights, it affects the pictures you want to get and the throws the colour balance off.
Dental surgery, ugh. It's rough! Feel better soon, and enjoy the time to play with your aquariums!