I like to aim them so they direct the surface debris toward skimmer.
I would point them so that they rotate the water in a counter clockwise direction past the skimmer in the Northern hemisphere. Hatawa
The filter is not working properly it may have a hole in it or be incorrectly assembled.
What is your question
The pool filter needs to be "back washed"
This happens because of the air in the tubes. Air gets pulled in through the skimmer, goes through the filter, and back out to the jets where it makes those white colored clouds.
why is there a purple line around the top water line in my pool
Possibly, but only if the Jets return and he is traded to them.
Most pool jets are a simple push in affair. Just get a screw driver between the pool wall and the flange on the jet and wiggle it until it starts to come loose. be careful however some of them screw into place.
In my pool the jets all face to the right. As I see, this works well. It keeps the water flow or movement circleing the pool and moves all debris towards the skimmer and bottom drain.
By throwing the pump into the pool
The pump acts as the suction to pull the water into the filter and return it to the pool's jets. What item was torn off? You would have to close the valves on your returns so the pool's water does not come out through the broken part. Can you post pics or explain more? Good luck!
Yes it can make a big difference to the amount of floating debris and dust that sinks into your pool. The ideal place for the static skimmer in a pool is down stream from the return jets (These are the jets that return filtered water to the pool) and down wind from the prevailing winds, this can be a bit more difficult to work out as the wind direction over a pool is strongly influenced by the building surrounding it. The fact is that very few pool builders get it right. if the skimmer ends up in the wrong position there is always the option of using a floating swimming pool skimmer skimmer. this type of skimmer is set to the suction of the pools filtration system and connected via hose to the vac plate over the leaf basket, It can be fastened in place or left to float free in the pool and will keep working regardless of water level, Check out the link below on floating skimmers
The pool return line is the one that returns the water form the filter to the pool. Usually you'll see holes in the side walls of the pool with little eyeball sockets where the water flows back to the pool.