125 Gal

Image of Overflow setup - Photobucket - Video and Image Hosting
For the two large holes inside the OF they need to be towards one of the walls more because of the elbows off the standpipes stick out some.
R. Durso's 180g - Durso Standpipe for AGA Small Overflows

Now the only thing I ran into with having both CL and drain lines in the OF was that when I kicked the pumps on the water raised 1 3/4" in the tank because I was trying to put so much water into my OF chamber. I ended up using the OF for all water to the sump and then put in two intakes to the CL right beside the OF chamber. If you are going to keep them all there then you just need to calculate for the rise of the water. It will work but just keep that in mind.

Also ....copy your

 

Stand Pipe

Otty, thank you for the tip on the IMG tag. I'll use that going forward. I appreciate all that you have posted as you have built your system. What a good example for others to follow.

As for standpipes, I'm planning to use a variation of Ken's adaptation of the durso system. Employing 1.5 inch bulkheads and piping.

R. Durso's 180g - Ken Stockman Standpipe

The closed loop system has its own supply, 2 - 1 1/2 inch supplies from the mid section of the tank. You can see one of the two in the bottom center of this image, the other is also on the center line 16 inches from the view end.

(used img tag - but only showes the link??)

All of my drilling is in the bottom of the tank... I'd considered drilling the end wall but hope to hide all piping under 1.5 inch of sand substrate.

 

I have the CDN complete:



You can see that I used a "drip irrigation" valve for the flow control into the CDN. Since I could not find a "bulkhead" style fitting for 1/4 inch tubing at the hardware store, I used standard 1/4 inch pipe to 1/4 tube fittings and wrapped the tubing around the outside of the CDN. The pipe is 3' long 3" dia pvc.... it takes about 100' of 1/4 tubing to go around the outside of it... the pipe is filled with bio-bale....

It is up and running on the seed tank and should be ready when the tank is ready....

 

Drilling is complete

The holes are drilled. Time to get the oil out of the inside of the tank. A bit of warm soapy water did the trick.

I used a piece of "duct tape" on the inside of all holes that were drilled. The chip out in the inside is very small chips, not sharp to the touch. So, I have spent no time dressing the holes. The fit to the bulkheads is very good.

I used the drill bits sold by "Glass-Holes.com", they are not very expensive. Because of the 1" bulkheads I chose, he had to custom order the drill for it... His customer service was very good, even answering the phone on Sunday when he was "closed"...


Tank cleaning:

We are waiting for the cabinet to arrive then we can start working on the PVC...

 

At last!!

The stand has arrived.



Now we can get down to the business of finishing the setup. 8)

 

I have obtained all the PVC for sitting up the inside of the tank...tonight's project??

Question for Otty, for your stand pipe in the overflow, how big of a vent hole did you drill?

 

hey the new stand looks great!

k+ on those great drilled holes

 

Two Choices for flow from the OM....

Thank you jakah24.


To start with, here is a view of the new setup from the sofa...I'll like it better when there is water in it...



End view with the overflow in place (the stand pipes are just visible over the top of the overflow):



OK there are as many ways to plumb the inside as there are people building tanks... My first choice was:



But with 1" PVC, that is not very realistic...

So here are 2 choices that will realistically work (near side ...as that provides more "push" up the end of the tank and far side of the tank :-/ ...which provides more push along the length of the tank.)



Or Right and left:


For the Ocean Motions valve I have 2 drums version 2 (30 seconds continuous flow per leg ) and version 3 (15 seconds continuous per leg :-/ ) both send flow to 2 legs at a time....

I favor version 2 as the tank is setup as peninsula and this will give a longer push with less pulse...and the near side as piping...

I'm interested in what are your thoughts or questions are.

 

PS, with a bit of heat I should be able to lower the piping a 1/4"... right now it is 2 3/4" above the tank bottom...this is about 3/4" taller than I would like...making the sand depth about 3"...

The plan was for no more than 2" of sand...but to stay with 1" PVC, I'll need more....

 

One more option would be to run the piping under the tank and drill a few more holes in the bottom thus only the nozzles would be extending from the bulked fittings....