Since my tank has been cycling for 2 weeks now, I figure its time to finally make a plumbing update.
Here is the back of the display. The water drains from 2 overflows(each with 2 drain holes) and then the 4 drains combine (one from each overflow) into 2 lines that head toward the skimmer and sump. One line will be the primary, and it will feed the skimmer. The other line will be the back up and it will dump directly into the sump if the primary line can't handle the water flow for whatever reason (blockage etc.).
The lines then head to the furnace room where they cross over to the side of the room with the sump.
They exit the furnace room and go behind the sink. One line will feed that skimmer that will sit where the blue stand is, and the other line will dump directly to the sump as shown in the next pic.
Here is the left side of the sump where the skimmer will drain, the back up line will drain, the 300 conical tank drains, and the chiller drains.
After entering the left side of the sump the water is drained out the right side. The line above the stand is from the 300 conical tank and the line comming from the chiller is partially hidden behind the sump.
Once the water is drained out of the sump it hits the return pump that runs the whole system. It is split to feed the display, the chiller, and the 300 gallon in order to bypass the chiller if needed. Additionally the 300 has a drain line that will let me open up a valave and get water directly to the drain. I will use it when doing water changes.
Around 65-70% of the water goes through the chiller. From there half of it is split to go to the 300 and the other half returns directly to the sump. I originally intended to run all the water through the 300, but when testing this plan, the 300's water level ran too high, and caused too much water to drain to the sump when the return pump was shut down. By slowing the flow through the 300 I eliminated this problem. This also gets more chiller water to the display, which should keep the display's temp more constant.
The water from the return that doesn't go to the chiller goes back to the display. It is controlled by a gate valve that allows a lot of precision when dialing in the flow. Since the tank will feed the skimmer, this will make it easy to hit the skimmer with the optimum flow.
Brad