Kim's right... That is an eyeball return. All you have to do is unscrew it a little (as Kim said it may be tight at first) and the eyeball will move and you will understand the mechanism. Turn the eyeball away from the skimmer, and towards the bottom a little to create a rotating current in your pool... This should help quite a bit with circulation.
Your pressure seems normal to me with and without solar panels. My pressure is similar (12-18 psi) to that, and I have a 3/4 HP pump...
There seems to be air bubbles coming out of your jet, is that the case? If that is so, then it means you have air entering your plumbing somewhere... Of course, with all those couplings everywhere, it would be difficult to diagnose. To be honest, once the season is over, you can get all your plumbing fixed for about 200$ excluding labour. All you need is someone handy with PVC (which I understand, not everyone knows someone who is)... Mind you, anyone on this forum can show you how to do it. If you've ever played with legos, it's pretty much the same except that you glue them together...
AMAZING pics by the way... It's so much easier to offer advice when the problems are presented pictorally (if that's a word!)
Your pressure seems normal to me with and without solar panels. My pressure is similar (12-18 psi) to that, and I have a 3/4 HP pump...
There seems to be air bubbles coming out of your jet, is that the case? If that is so, then it means you have air entering your plumbing somewhere... Of course, with all those couplings everywhere, it would be difficult to diagnose. To be honest, once the season is over, you can get all your plumbing fixed for about 200$ excluding labour. All you need is someone handy with PVC (which I understand, not everyone knows someone who is)... Mind you, anyone on this forum can show you how to do it. If you've ever played with legos, it's pretty much the same except that you glue them together...
AMAZING pics by the way... It's so much easier to offer advice when the problems are presented pictorally (if that's a word!)