Primer (This is used to clean and prep the parts that connect to one another with "slip fittings". You only need to prime the areas that connect to each other. Do not touch or allow anything to contaminate your primered area to ensure a good bond. I usually let the primer dry a couple minutes before glueing. Do not test fit primered parts together. They will stick and possibly not come back apart.)
http://www.lowes.com/pd_23781-138-307560_4294822081_40?productId=1067279
All purpose pvc cement (This is used to glue the parts together. Glue around the pipe and not the fitting and press the pipe into the fitting and twist a little bit. Do not wait long or the glue starts to setup and pressing the parts together gets harder. Once you press them together they will likely not come back apart after 2 seconds. Do not glue or prime any threaded parts. I usually take a rag and wipe off excess glue.)
http://www.lowes.com/pd_23541-138-30821L_0__?productId=4750817
X amount of 1.5" schedule 40 pvc pipe (You will just have to estimate how much pipe you need. They have 5 and 10 foot sections.)
http://www.lowes.com/pd_23840-1814-...=3359594&Ns=p_product_qty_sales_dollar|1&pl=1
1.5" slip on adapter (These will replace the white adapters in your pics. Yours are made to fit a hose and not pipe. You will need at least 5 of them. One on the bottom of the skimmer, one on the return fitting, two on the pump and at least one on the filter. The grey fitting looks bigger, maybe 2", but it will require the same type of adapter whatever size it is.)
http://www.lowes.com/pd_23903-1815-...=3339826&Ns=p_product_qty_sales_dollar|1&pl=1
1.5" 90 degree slip on elbows (You will have to figure out how many you need according to how you want to run your pipe.)
http://www.lowes.com/pd_23909-1815-...=3307896&Ns=p_product_qty_sales_dollar|1&pl=1
1.5" 45 degree slip on elbows (You will probably not need these, but if you do things may get a little more complicated when test fitting them.)
http://www.lowes.com/pd_23894-1815-...=3369494&Ns=p_product_qty_sales_dollar|1&pl=1
1.5" slip on couplings (If you cut a piece of pipe wrong or need to make a pipe longer, these are what is used. You'd better get a few of these.)
http://www.lowes.com/pd_23901-1815-...=3307892&Ns=p_product_qty_sales_dollar|1&pl=1
1.5" slip on unions (These allow you to take your pipe apart easily. If you dont have these then you will have to cut your pipe to remove the pump or filter. I put two on each section on the ends of my plumbing except from the pump to the filter.)
http://www.lowes.com/pd_188223-6930...50160561&Ns=p_product_qty_sales_dollar|1&pl=1
1.5" slip on valves (Put one near the skimmer and one near the return so you can disconnect the pool from the plumbing if you have to work on the pump or filter. I used 1.5" ball valves from Lowes but they tend to stick and the handle can break off leaving you helpless. If you want to do it right get the ones made for pools.)
http://www.sunplay.com/pentair-2-way-pvc-valve-263038
Plumbers tape (Used to seal threaded connections. Wrap around threads 2 to 3 times clockwise with the threads facing you. If you do this the other way the tape can start to peel back when threading the connector in.)
http://www.lowes.com/pd_456833-138-...=4751313&Ns=p_product_qty_sales_dollar|1&pl=1
I suggest you make a drawing of what you want your plumbing to look like before you start. Like the pic in post 1, I suggest you have something for you pipe to sit on like a block to take the weight off the skimmer and return fittings. Sometimes I take a pencil and mark where the fitting goes when test fitting because when test fitting the pipe you cannot press it all the way in or it will be difficult to remove. Also mark a straight line down both the fitting and the pipe so you know you have your angle right. Hope this helps.
Thanks to MikeInTN for the original post too. I'm all sorts of jazzed to get on this ASAP.
