View Full Version : Overboard's 8 foot 360 Gallon Build

08/08/2016, 07:53 PM
My last large set up, an 8 1/2 foot set of tanks totaling 305 gallons, was sold way back in 2004. Finally, after "making do" with a 150 for several years, I am working on a large tank once again.

I had been working on different ideas for a custom build (really like Minh's tank) when I ran across a great deal on a used 360 gallon tank. 8 feet long, 31 inches tall and 30 inches deep. It has steel framing and came with a tubular steel stand. It was built as a peninsula-style tank so the overflow box is on the left side if placed against a wall, but I could live with that. It also came with a large acrylic sump, Hammerhead pump (will use it with the water station), and a PVC liner for the stand.


I couldn't resist so a deal was struck and I proceeded to have our old style built-in entertainment center ripped out. (My 150 is to the left.) A side benefit is it gave me a good reason to upgrade our TV to a 65" Sony which we mounted on the wall vacated by my 150.



Because my space was only 2 inches longer than 8 feet, I had the regular sheetrock pulled and Hardi-Backer installed to help deal with moisture. I also added plumbing to a water station in my garage and, of course, extra power outlets.


The finished product looks good.


So the tank was delivered. As expected, it barely fit.


My twin 10 year old grandsons fit easily.


Installed, it is clear the tank could not have been any larger and still fit in the space I had available.

08/08/2016, 08:45 PM
You could have said you had that tank custom built to fit in that space and I would have believed you. It looks great.

08/08/2016, 08:53 PM
The next step was the cabinetry. I found a local cabinet maker that is a serious perfectionist and even though he had never built a canopy or stand before, he researched and thought through the construction extremely well.


I am very happy with the finished canopy and stand skirt.


08/08/2016, 08:54 PM
Thanks RBF!!

08/08/2016, 09:53 PM
Very nice build.

Did you just paint over the Hardi backer board?

Any plans on dealing with the humidity from such a big tank?

How is the steel frame going to hold up? Is it powder coated or something?

Again looks like you are going to have fun with this tank

08/08/2016, 10:51 PM
Very nice, I really like that color you went with on the woodwork....that's a much better height for the TV too :)

08/09/2016, 06:14 AM
Very nice build.

Did you just paint over the Hardi backer board?

Any plans on dealing with the humidity from such a big tank?

How is the steel frame going to hold up? Is it powder coated or something?

Again looks like you are going to have fun with this tank

Definitely having fun!

Heat and humidity have definitely been a concern. I intend to go back to my old school ways and use some MH lighting in the set up, and I know those guys get hot.

The Hardi was floated and textured like regular sheetrock, but the paint used was egg-shell/semi-gloss that would be a little harder than flat paint. There is a little room between the tank and the walls. About 6 inches behind the tank and an inch on either side. I will have circulating fans blowing up all three surfaces to help move humidity out. The stand is "vented" across the front at the bottom to help pull in fresh air (the idea anyway). Might have to tinker with the final placement of fans, but the idea is to keep the air moving away from the walls. I have the ability to add an A/C vent into the canopy, if needed.

The stand was powder coated already. It had been in use for 6-7 years and still looked very good. I just had to remove remnants of the previous wood skirt that were glued tot he steel tubing.

08/09/2016, 06:16 AM
Very nice, I really like that color you went with on the woodwork....that's a much better height for the TV too :)

I agree!! The built in cabinetry came from the era of large DLP-style TV's that took up large areas. I basically mounted our flat panel across the front, but I never liked the look and it was very low. The new TV is at a much better viewing height, takes up almost no room, and is easily visible even in our kitchen.

08/09/2016, 04:41 PM
Just wondering if there is a reason for the canopy being so large?

08/09/2016, 05:26 PM
Hi Bono,

A couple of reasons. I wanted full access via the cabinet doors (pics to follow) as the top does not open. Also, going back with metal halide lighting and the reflectors are pretty large (also pics to follow).


Reel North
08/13/2016, 06:15 AM
That's awesome.

08/13/2016, 11:10 AM
The canopy has a few features I really like.

First, it is designed to appear as four regular cabinet doors to match the four doors on the stand.

http://i32.photobucket.com/albums/d4/marklkurtz/IMG_0496_zpswwhnng9z.jpg (http://s32.photobucket.com/user/marklkurtz/media/IMG_0496_zpswwhnng9z.jpg.html)

But it is actually two doors that swing up. Access inside the canopy is very good.

http://i32.photobucket.com/albums/d4/marklkurtz/IMG_0492_zps4muyismv.jpg (http://s32.photobucket.com/user/marklkurtz/media/IMG_0492_zps4muyismv.jpg.html)

The doors are held open automatically by these hinges.

http://i32.photobucket.com/albums/d4/marklkurtz/IMG_0495_zpsw2qwhx6n.jpg (http://s32.photobucket.com/user/marklkurtz/media/IMG_0495_zpsw2qwhx6n.jpg.html)

The lid is removable, but is also designed to vent heat, while limiting light spillage.

http://i32.photobucket.com/albums/d4/marklkurtz/IMG_0494_zps6zgrsccq.jpg (http://s32.photobucket.com/user/marklkurtz/media/IMG_0494_zps6zgrsccq.jpg.html)

There is more work yet to be completed, including venting for a fan to bring in fresh air.

With MACNA coming soon, I will probably hold off work until after the conference, just to be sure there is not a good design idea or additional equipment I want to incorporate.

08/13/2016, 12:28 PM
excellent cabinet design!

08/20/2016, 10:53 PM
Love the canopy design can you tell us more about the hinges pls.

Ps hope to see you at MACNA

08/21/2016, 03:54 AM
Love the canopy design can you tell us more about the hinges pls.

Ps hope to see you at MACNA

+1, would like to know more about hinges please.

08/22/2016, 07:44 PM
Def subscribing :)

08/23/2016, 12:06 AM
Nice tank

08/23/2016, 10:16 AM
This is becoming my dream tank build. Great job.

09/22/2016, 07:34 PM
Just noticed my photo links are not working. I will try and get that fixed.

09/22/2016, 07:39 PM
Not sure what happened to the linked photos. Here are a few.....

http://i32.photobucket.com/albums/d4/marklkurtz/Reef%20Tank%20360/IMG_0039_zpsd4jjrwew.jpg (http://s32.photobucket.com/user/marklkurtz/media/Reef%20Tank%20360/IMG_0039_zpsd4jjrwew.jpg.html)

http://i32.photobucket.com/albums/d4/marklkurtz/Reef%20Tank%20360/IMG_0247_zps0gostjhm.jpg (http://s32.photobucket.com/user/marklkurtz/media/Reef%20Tank%20360/IMG_0247_zps0gostjhm.jpg.html)

http://i32.photobucket.com/albums/d4/marklkurtz/Reef%20Tank%20360/IMG_0490_zpsohkb53x0.jpg (http://s32.photobucket.com/user/marklkurtz/media/Reef%20Tank%20360/IMG_0490_zpsohkb53x0.jpg.html)

http://i32.photobucket.com/albums/d4/marklkurtz/Reef%20Tank%20360/IMG_0492_zps4muyismv.jpg (http://s32.photobucket.com/user/marklkurtz/media/Reef%20Tank%20360/IMG_0492_zps4muyismv.jpg.html)

http://i32.photobucket.com/albums/d4/marklkurtz/Reef%20Tank%20360/IMG_0495_zpsw2qwhx6n.jpg (http://s32.photobucket.com/user/marklkurtz/media/Reef%20Tank%20360/IMG_0495_zpsw2qwhx6n.jpg.html)

Update and new photos this weekend.

09/23/2016, 09:50 AM
Nice build.

It has been asked before but I am really curious about the hinges you used. Can you tell us the model and where we can pick up those hinges?

09/23/2016, 06:46 PM
The cabinet maker that built the canopy supplied the hinges, but this seems to be what he used (but this was from a UK website and I am in Texas). "LAMP" is embossed on the side of the hinge.



They hold up the large lids very well (each has three hinges) and they have a soft close feature.



09/23/2016, 07:28 PM
Looks like these on Amazon

Can you confirm Overboard?

Beautiful build Overboard!

09/23/2016, 08:10 PM
Hey Tim!

That's them.

Each of my lids are 4 feet long so they are not light. These hinges/stays are pretty heavy duty. The only deficiency I see is that on my installation, the lid can actually be raised too high. Push the lid up too high, and the sliding rod is pulled out of the connection point. I wish they had a built in stop, but I think I will just drill the rod for a small screw to act as a stop.


09/23/2016, 10:49 PM
how much MH u need to cover that tank cuz I think i saw you mentioned MH

09/24/2016, 06:55 AM

Years ago, I had a 8.5 foot long system (215 with a 90 on the same stand) and I used 3 x 400 watt MH over the 215 plus 1x 250 MH over the 90. All this supplemented with VHO's. The reflectors used were pretty cheap "spider-style" reflectors so I am not sure I was getting the most out of the lights. Never checked with a PAR meter. Acros grew extremely well and the colors were great. Certainly "old school" by many standards.

I tried AI Sol's, Hydra's and Hydra 52's over my 150 and just never could get good color. Not saying it is not possible, I have seen some great LED tanks, but my skills may not be up to the task.

I am going with a mixed set up this time, but still tweaking the final selection.

First, I am going with much better reflectors. I will be using large Lumenbrights. I will probably use 250 watt bulbs, but also mix in some LED fixtures.

To be continued...........

09/26/2016, 01:31 PM
looks really nice!

09/26/2016, 04:34 PM
Very nice tank!! Congrats and glad to be following.