They're looking pretty good and I see you've got some plants with a large number of berries, shame they're not that tasty. Yesterday I bought exactly the same sort of pipe for my new system for greens, still can't figure out how to connect all of them, but I'm sure I'll find a way.
Hope you don't have leaks, I had a small one at first. Mine was easy though all on a slope gravity fed with the standerd pvc fittings. I didn't even use glue
I'm going to go for a vertical system, trying to ape the ubergro system (you can find them on youtube) . It's the sealing of the ends I'm having problems with, I found some fittings but they're £6 each and I would need 2 for each layer, + the extra bits that would carry the water from one level to the other.