UPDATE 4-11-16
When I first spoke with Scott at Aquarium Specialty about the Elos, I expressed concern that there was no bottom in the stand. It was explained to both of us by Elos Italy that it's designed this way to keep sound/vibrations from transferring through the stand. This is understandable and a great thought, but I wasn't fond of putting my sump directly on my wood floors. If I had tile or concrete, it would have been fine. So Nick at Elos graciously offered to make me a false floor that could be inset into the stand. It arrived and was very nice. Made out of the same thick materials as the rest of the stand, and they had large, heavy duty feet to keep it raised off the floor. But being that I've made idiot mistakes in the past and I'm not always that careful when removing reactors and doing other maintenance, I was still worried about saltwater spills damaging the floor. So I decide to have my local acrylic smith (
www.buildinganobsession.com) build me an acrylic tray. It fits perfectly and I added a dozen or so felt pads to the bottom just to make sure it has airflow underneath in case any moisture was to make its way under there. And now any spills will be contained inside the tray.
Once that was done, it was time to finish unpacking the tank and move it inside and on to the stand!
I have to say, the clarity of the glass is AMAZE-BALLS.
The build quality of the entire tank is top notch.
Subtle beveled and highly polished edges, really clean silicone work... very nicely done.
Lets start with some pics of the overflow that we are all curious about.
I am still unsure of exactly how it works, but I'll let you at least see what I'm seeing.
(and mind you, I hadn't cleaned the dust and fingerprints off everything)
Here is the complete overflow.
As you can see, the water enters from all levels of the aquarium.
It goes through the vents, up a channel to the top, where it overflows into the rest of the overflow.
There is a cap that sits on top.
Notice that there is also an optional return spout at the bottom. It's currently capped off.
This seems quite low to me, if you have substrate on the bottom of your tank.
I'm also not sure what would happen in the event of a power failure? Back siphon??? I would think Elos has thought of this. Maybe they can offer some insight.
This is what you see when you lift the cap off.
The large adjustment dial is for dialing in drain flow, and the small dial is for dialing in the return flow.
An acrylic "key" is included to make turning both dials nice and easy.
Removing two small hex bolts will let you remove the trim around the dials to reveal the interior of the overflow.
And the front wall with the all the drain vents lifts straight up and out.
The standpipe (the outer portion) is removable for maintenance. It lifts right out.
So now you can see the 1.25" drain standpipe and the 3/4" return behind it.
There actually seems to be two of the smaller pipes but I do not know what the second one does.
Under the tank, there is only one drain hole and one return hole.
And as far as I can tell, that square box over the return is completely sealed and not removable.
The Elos mystery continues!