Last shot for today. The shot shows the second and third chambers. I am very glad I set the third chamber (which is for the intake to the Iwaki) up with the full divider to act as a second bubble trap. The third chamber is completely bubble free.
The test went perfectly..even all the makeshift joints using thread tape on slip joints held without leaking. The return pump is a MONSTER. I don't think I will have much trouble with flow...the return is going to go through 1 1/2" pipe to a tee reducer reducing it to 2 1 inch sides. I will then run the 1 inch to the right and left sides of the tank, and am adding 2 SCWDs one on each side. These go to 2 fan nozzles on the right and 2 fan nozzles on the left through 3/4" pipe. This gives a total of 4 nozzles, 1 for each corner of the tank. With the scwds, 2 nozzles will be active at a time each having between 500-600GPH each. I think this will be plenty of flow for most animals.
After testing, I redirected the output of the pump outside, the Iwaki would shoot a 6 foot stream of water through the 1" pvc...and could completely empty the chambers it was connected to in about 20 seconds. I am going to be very dependent on my 4 1inch returns from the tank to keep the sump at a proper level. I don't think it will be an issue, but we will see.
I am still waiting on completion of the tank/stand/canopy, and will add the next section on plumbing showing all I have described above, when the tank and stand/canopy arrive. Thanks for Reading!