400g Project has started

dustin273

New member
Hello all,

I am new to reef central and figured I could get some useful information from everybody.

My project began when I found a 400 gallon 3/4in glass tank on Craigs list about 3 years ago. I wasn't ready to make the move up from my 55 gallon tank, but the deal was so good I couldn't pass it up. ( you know what I'm talking about!! ) So, I purchased the tank knowing that sooner then later I would get it started. The demensions are 96in x 31in x 31in.

First, I spoke to many different LFS and cabinet builders and asked them about designing the stand. Many people told me different ways to build it, so I picked one and started. Unfortunately, I didn't know about RC at the time of construction. With help of a great friend, I began to design, cut and build and the stand here in my garage. It's made out of high quality 3/4in plywood with water proof glue and maple vanier ( not the cheap stuff from Home depot ) as the outside box. Then, I framed the inside of the box with 1x3in poplar hard wood and the outside is framed with 1x3in Maple. For extra strength I put 1x6in poplar in the center of both front and back. The doors are made of the same wood with an outside trim piece made out scrap maple. I then sent the stand out to be sprayed with a clear coat. It just came home yesterday and looks great.

My next step is to reinforce the floor before I put the tank on the stand. All my equipment with be in the basement running up to the tank on the second floor. This should eliminate a “few lbs” for what it’s worth! Oh, and eliminate water spill mistakes from getting into the stand.

As it stands right now, my tank is on the second floor in another room of the house. It sits on the crate it came in and I put bricks down to hold it up off the ground.....this made it easier on our backs setting it down. All 14 people that helped carry it in!!! I figure the tank, water, sand, stand, canopy, rock, and any other misc. stuff should weight approx 5000lbs +/-.


Does anyone have experience building stands?? What do you think about the strength of the stand I built???

Here's a few pics to start my journey.....







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I like the stand.. It looks great but I wondered the same thing.. Is it going to hold up over the long haul. It looks less supportive than my 75g stand...
 
As I said above....guys at the LFS showed me some stands they had professionally built for customers and said the plans I showed them were overkill. Nothing wrong with overkill but this is why I posted a thread.
 
Not knocking your stand.. I just don't trust to many LFS guys.. Some are golden but many just want to sell you stuff...

If it were 2x4s and not 1x4s I would say you are probably safe.. A few questions... Are the joints joined with buiscuts? Is the plywood outside 3/4? Do you plan to put a bottom in the stand with braces like you have going across the top...

It is a killer stand as far as looks but I just can't see anyone here telling you that is overkill...
 
The corners are 2 1/4in thick total. The inside frame=3/4in, plywood 3/4in, and the outside trim 3/4in. The box is dado jointed 3/4 plywood.

Does that make sense??
 
Yeah I understand better now... Basically the skin and trim are structural as well as the frame..

I would still add a floor to keep the long span along the front and back from buckling in the middle.. That much weight is nothing to screw around with..
 
<a href=showthread.php?s=&postid=13697247#post13697247 target=_blank>Originally posted</a> by daleKW


If it were 2x4s and not 1x4s I would say you are probably safe.. A few questions... Are the joints joined with buiscuts? Is the plywood outside 3/4? Do you plan to put a bottom in the stand with braces like you have going across the top...


I would think any hardwood like maple or poplar would be way stronger than a pine softwood 2x4??


Poplar. The characteristics of poplar are its closed wood pores, even staining,
durability, and greater strength. Poplar is often used inside of upholstered and wood furniture.

Pine. Pine is soft, light weight, easy to work, less strength, and holds paint and
varnishes well.

Maple. The characteristics of maple are heavy weight, hardness, greater strength, good
shock resistance, and straight grain with tiny wood pores. Maple is often used in bench tops.
 
<a href=showthread.php?s=&postid=13697402#post13697402 target=_blank>Originally posted</a> by daleKW
Yeah I understand better now... Basically the skin and trim are structural as well as the frame..

I would still add a floor to keep the long span along the front and back from buckling in the middle.. That much weight is nothing to screw around with..

Sorry...it does have a floor in it. Basically, I built a complete box that was sealed and cut holes from there. I then built the frame inside the box.

My fault for not explaining the details.
 
:)

I will leave you to it them... Sorry. I couldn't tell it had a floor.. I could just see issues if the front and back were not attached at the bottom...

I do like the look of the stand.. Keep it comming...
 
my sister bought a factory made stand for her 125 gal. tank that's built solely out of 3/4 in. plywood trimmed with solid wood it doesn't have a back on it either just some bracing,it's a very strong stand,your stand looks stronger built than what hers does,hers doesn't even have the 1x4's but it has 2 dividing walls inside(3 compartments)

yours has 1x4 both inside and out,if those are anchored together well it should be almost as strong as a 2x4,I think you'll be fine but I am by no means a structure expert,but I dont see overkill in it,that is a massive tank and will be very heavy if I were building a stand for it I'd use 2x6 frame with the 3/4 in. plywood,but thats just my $0.02

Good luck with the build that will be a beautiful set-up
 
Should be fine, but you could have someone add a sturdier bracing on the inside cheap to help you sleep better after you add water. Set your sump, skimmer, etc up underneath dry and see how much room you have to play with. We all have a "man I wish I woulda done that."
 
i agree about adding a little more bracing in the stand as well, and trust me i am one person on here that has taken a lot of flack about my stand on my 11 foot tank , and it is framed entirely out of 2x4s then skinned and has been running for almaost a year and a half , if it were me i would just add some 2x4 bracing in it for peice of mind. but just like redtop said , just my 2 cents . i do like the look of it though. good luck with the build. oh one more thing . those premade stands are gteneraly built considering fresh water weight with very little additional weight considered, when you go to salt water with lots of sand and lots of LR you add a lot of weight that wasnt considered into the design of it. good luck
 
some food for thought.

salt water is 7.5 pounds per gallon. For you tank that would be 3000 pounds or 1.5 tons plus the weight of the tank and whatever is going in.
 
That is some very nice detailed work on that stand.
I'm pretty sure that glass tanks have all the pressure to the outsides where an acrylic distributes its weight through in the middle.
 
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