Need help understanding old Elos 120 system

[bitwise]

We've had a Elos 120 tank in my family since 2008 or so, and it's only been wet for about a year of that time. The rest of the time it's been in storage. I'm building a rocket engineer stand for this tank as we speak, and planning on this upgrade from my 43g Reefer.

I can't find an Elos sponsored forum on here anymore, so I come to you guys for help. It looks like this tank has a single pipe each for return to/from the tank to sump. The return to the tank is pretty straightforward and has a smaller diameter flexible tubing behind the bulkhead (visible in picture 4). I screwed on the nozzle (show in picture 3), but I'm not sure that's done correctly. Does anyone know if picture 3 looks correct or what that little extra input does on it (show at the 90 degree elbow)?

Does anyone know what kind of design return this is from the tank to the sump? The unit I'm holding in picture 2 goes into the bulkhead, and then there's a guard that goes over visible in pictures 4 and 7. I'm assuming the gray corrugated tubing then connects to the black adapter in picture 1.

Picture 5 and 6 really have me confused. Does anyone know what that's for?

 

[vetteguy53081]

ELOS 120 tank setting up - Yahoo Search Results

 

[bitwise]

@ELOSAmerica can you guys give me a hand? :)

 

[bitwise]

Bump

 

[ELOSAmerica]

@ELOSAmerica can you guys give me a hand? :)

hello , it a very old tank .. should be a 2004 2005 series .
if you need help contact me directly by phone or email

 

[bitwise]

Ok will do, thanks