I doesn't really need direct sun, if you're not trying to grow flowering plants. What kind of plants do you have? How many goldfish? For them, its probably best to be out of the sun. Keep your eye on how hot the water gets. And just be aware that raccoons and cats love to catch fish! Good luck on your project. That's how I started too.

If you check the manufacturer specs on the brackets, you'll see that they are specifically not intended or approved for a free standing structure. They simply do not have the mechanical strength that's needed to comply with codes concerning resistance to lateral forces. They are generally only approved for use with a structure that is attached to something else, like a house. I know a lot of people use them for things like fences and pergolas, and it may seem logical, but it's not ok. You should have no problem with pressure treated posts in concrete...if they're installed properly. That means that you fill the bottom of the hole with about 4" of gravel for drainage, rest the bottom of the post on top of the gravel, and pour the concrete so that the sides of the post are encased, but not the bottom. This will be a much stronger construction, and allow you to do stuff like have a swing without the structure loosening up or leaning over time.

Charlie's Soap made me itch like there was no tomorrow! I have very sensitive skin, and have trouble with lots of detergents. Unfortunately this is one of them. When I try a new detergent I only wash one load in it, and wear clothes from the load on two consecutive days to make sure it's all right, or if not, that it's truly the detergent causing the problem. I remember the Charlie's load very clearly - I went home from work early, took a long, cool shower, downed the maximum dose of Benadryl and slept until sometime the next day. The burning and redness didn't stop for a while after that, but it was manageable. I've never heard of anyone else having that kind of reaction to Charlie's, specifically, but I'm telling you so you know you aren't the only one! :) I hope you feel better soon! (FYI, I use BioKleen powder, and I can use the liquid Tide - not the "free" stuff or anything fancy; just the blue liquid. Odd, I know. I can't even use Dreft! I can also use Mrs. Meyers fabric softener, so if BioKleen ever turns on me I'll try her detergent next.)

I would take the euphorbia out and give it its own pot. The damage on the main plant could be from cold, or sunburn. It looks cosmetic to me. If its soft and oozing, I would cut the top off and reroot it, but if not, I'd just leave it. Some cactus and succulents just seem to be a little more tender, also I have some that the older growth changes to a silvery grey or brown skin. this may just be natural for this variety.