Shipwreck's 400g build

shipwreck

Member
Joined
Apr 1, 2011
So I decided I should finally post a build thread for my new 400g tank.  I had started one about three years ago on a couple other forums but it ended up stalling.  The display tank is 6'x3'x'3' and built into the wall with a dedicated area behind the tank.  We'll start with the history first.  Now I will tell you this is the most expensive tank I have ever bought, but also the cheapest.  About 3 years ago I went to a meeting in st. thomas to see Mark's 8'x4'x3 monster and was in shear awe, of the size and the possibilities.  Up until then I had a 25g, then a 65g, then a 120g, and never could aquascape them due to the limited size.  I came home from the meeting went online and found a friend in Quebec had decided to sell the tank I have now.  I have jokingly told my wife that I wanted to buy this tank, which would allow the current tank to be removed from our breakfast nook, and in the renos also get her a laundry room.  Expecting her to say no she agreed, and we arrange to go to pick it up.  This was the cheap part, he gave me a great deal.  Then came the expense

So we had decided to put the tank in the back room of the house, an old garage that a previous owner had attempted to convert to living space.  Problem # 1 came when I realized 2 things.  The 7' ceiling would leave me just over a foot of space above the tank and a support post would run right through the tank which became a problem when I couldn't find a square 6" bulkhead for it.  This is also what has delayed the build by a couple of years.  Since getting the tank the renos took over.  I have replaced the support structure in the room, raise the roof by 1', replaced the roof, replaced a 20' section of exterior wall that literally feel into the driveway, ran new plumbing, electrical, insulated, installed cabinets, built stairs, tiled, painted, laid flooring, and the list continues all for an $800 tank.  I built the tank myself in place and then have done most of the reno's around it.  The renos are done except for some cosmetic finishes so I can finally start on the tank.

I have gathered most of the tank parts but still have some things to figure out.  The first real step forward on the tank came tonight when I installed the 14 bulkheads into the main tank.  Next step will be to build and install the external overflow box on the tank then I can start the plumbing.  I will take some pictures of the progression so far.
 

Darryl_V

Super Active Member
Joined
Jun 29, 2011
Location
Woodstock, Ontario
Wow....just wow.  I was wondering what happened to you!....lost in the renos it seems.  Looking forward to seeing the tank progress.  14 bulkheads.......tell me your not doing a closed loop?  Not a fan myself.
 

shipwreck

Member
Joined
Apr 1, 2011
Well I am doing a closed loop, actually 2 closed loops.  A new custom product from Oceans Motions That I will be trying out, but that only accounts for 8 of the holes.  The other 6 came in the glass.  I have an OM 8 way that will be on the return line so will use the other ports for those returns.

Check out this video DSCN0058  This shows the OM device I will be using, but I will have 2.  Check out the flow pattern of the plastic bits in the water and you will see why it caught my attention.
 

Darryl_V

Super Active Member
Joined
Jun 29, 2011
Location
Woodstock, Ontario
OM devices are great.....and closed loops work fine.  Just not a fan of all the plumbing and the high wattage external pumps. 

I heard OM/paul is going out of business?
 

shipwreck

Member
Joined
Apr 1, 2011
The high wattage pumps are being replaced with DC pumps that are now speed controllable and with minimal watts.  The plumbing is a bit of work for a closed loop for sure but with an inwall system I can keep all the plumbing hidden and not have any pumps/powerheads taking up space in the tank.  There are pro's and cons to both methods that is for sure.  I am considering using the new RLSS pumps, or possibly the sequence DC Pumps for the setup.  My first task however is to plumb the tank and see what the dart I already have does to the tank to guage the flow I need.  The closed loop shown above actually switches the pump inlet and outlet so that they are always in a straight line from each other.  The theory is that having the pump draw directly in line with the pump return will increase the flow.  The return of a pump usually is slowed by the resistance of the water it is trying to push through so in this case I am making them work together.  There are a couple other users of this system that have used it for a couple of years with great sucess.

Paul's real business, his custom machining shop has shut down so he doesn't have a personal facility to build the Oceans Motions line at the moment, and they motors he had been using have been listed by the manufacturer as obsolete and tripled in price.  As a result Paul has put a hold on the manufacturing of the OM's stuff for the moment.  I am trying to help him find an alternate motor/control solution and he is looking for manufacturing facilities to allow him to continue to build more products.

I will try to get some pics tomorrow.  I was forced to spend yesterday at a golf tournament, and tonight I am being dragged out to Strathroy for an appreciation dinner where I will be forced to eat great food and drinks.  Oh the humanity.
 

shipwreck

Member
Joined
Apr 1, 2011
Wow time flies its been 5 months and I still don't have pics. In fact I pretty much didn't do anything over the summer life seemed to get in the way. Started working in St.Marys, went to Germany and spent lots of time fishing and camping. Now time to get back to the tank. So I have the custom OM units plumbed up, at least dry fit. I have half the OM 8 way dry fit as well. Still need to plumb the frag tank, fuge, and QT tank and skimmer.  Still lots of work to go but now I have the support of my wife to get it finished, or should I say she wants the plumbing supplies, bags of sand and buckets of LR out of her space.  Biggest issue is still to find a motor and controller for the two custom OM units.
 

shipwreck

Member
Joined
Apr 1, 2011
Here are a few pictures of the fish room at the moment.

I have the plumbing for the tank done, just have to pull it apart and glue it all now.  I have 2 holes in the back of the tank about 18" from the bottom that I am not going to use now and need to figure how best to plug them.  I could just put a valve on each one for future use but that takes up a fair bit of space so I am looking for other ideas.  I would just plug them inside but I can't find a thread in PVC plug and to make one out of of a thread-slip adaptor and cap will create two posts that stick into the tank by 4 inches.  Any suggestions?

I also have to figure out how to plumb the frag tank, fuge tank and QT tank.  The frag tank is the top smaller tank and I have two 1" lines running to it from the OM8way that will provide the flow.  I will put a drain in that tank to the fuge tank below that will then overflow back to the sump.  My problem is now how to do the QT tank (the longer tank under the window) without having to use a dedicated pump.  It also currently is about 4" lower then I need it to be if I want to drain it for water changes to the main plumbing drain.  Any suggestions on how to reorganize this are or plumb it without another pump would be great.

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spyd

Super Active Member
Joined
Jan 31, 2011
Location
Kitchener, Ontario
For the QT tank, you would want to run it on a separate pump. The whole idea for the QT is to prevent any disease from entering your main system. Also, if you are using chemical treatments then you definitely don't want it connected to your main system. If you are solely doing hypo salinity then it can be done. One hole for return, one hole for drain and I would have one at the bottom to drain the entire tank after each use.

As for PVC threaded end caps, they do exist. Your best bet is to find a pump distribution company or just order a few online. A couple ABS end caps would not cause any issues either if you can't find PVC.
 

shipwreck

Member
Joined
Apr 1, 2011
@spyd I have always had a qt tank plumbed in with gravity feeds to reduce pumps and have a tank ready for impulse buys. They can always be isolated during qt and drained if problems arrise. However I consider a qt tank as different from a hospital tank. A qt tank is for isolation, possibly hypo salinity. A hospital is for meds and never connected to the system.

@saltycracker my wife calls the plumbing 'busy'
 

shipwreck

Member
Joined
Apr 1, 2011
The power came back overnight.  These types of outages are why the circuits for the new tank come from a generator panel. It is a manual generator and manual switchover but will allow me to keep the tank running during extended power outages.  I have had 24+ outages with my current tank before in the middle of winter so this was nothing.
 

Neopimp

Website Doctor
Staff member
Website Admin
Joined
Jun 9, 2014
Location
Sarnia
Grand bend area.  Drive In theatre is the main attraction there:)
 

shipwreck

Member
Joined
Apr 1, 2011
Well main tank is now full of test water. Still have a small leak in one bulkhead but not bad for 14 bulkheads.  Tomorrow is gluing the pipe on the special OM units and then I can test them for the first time.  Then can finish the plumbing for the frag/fuge/qt tanks and get everything cycling for a water test. First real step towards making this tank functional.
 

shipwreck

Member
Joined
Apr 1, 2011
Got the leaks fixed and one of the new OM units working in a test mode last night. I need to make some custom elbows for the returns to direct the flow up more but it looks pretty good and when I get the second unit I think the flow will be great.  I dropped in a few abs fittings just to test and they were easily moved around the tank. Now I will finish the plumbing for the second and move on to the other tanks. I can see fish on the horizon.
 

Duke

Distinguished Member
Website Affiliate
Joined
Sep 20, 2011
sweet. im almost as excited as u must me. that's a huge tank and what looks to be the making of an amazing system.
 

shipwreck

Member
Joined
Apr 1, 2011
Well had a bit of a setback. I had planned to use my old dart pump as the return pump and last night finished the sump plumbing so decided to test it out. Well it seems the shaft/bearings are shot and were seized and when I got them moving the pump was extremely loud. Also decided it may be too much flow for the return pump. Now I've got to find a new pump and modify the plumbing.  I am thinking of using a me dart with the snapper impeller or possibly try a waveline dc10000 pump. Any other suggestions?
 
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