33 Cube - the work begins - Page 3

Dmitry · 08-04-2007, 10:28 PM

Quote:

Originally Posted by Awibrandy


	Why not just regular PVC?

I think regular PVC would be something of a compromise and would make the plumbing look like a nuclear power plant. For one, the overflow box is external, so to get it into the sump in the stand with regular PVC we'd have to do two 90 degree turns to get into the stand: down from the overflow, sideways into the stand, down again into the sump to avoid splashing. Flexible PVC wouldn't need any since you can just bend it a bit right into the stand.

jejton · 08-05-2007, 02:42 AM

Excuse my ignorance but what safetys are there against the tank draining if there is a leak in the closed loop?

House of Laughter · 08-05-2007, 10:50 AM

Jejton,

The nature of a closed loop is exactly that - it's closed, so there are no risks of leaking. The drain and returns are both plumbed into the pump, so the water only goes through the pump and not into the sump.

Hope that helps.

D, I can bring you flex PVC on Wednesday when I do the run into the city - let me know if you want -

House

Dmitry · 08-05-2007, 12:02 PM

Jejton: and with ball valves behind each drilled hole you can remove the pump for maintenance without draining the tank.

Jim, I'm sending PM.

jejton · 08-05-2007, 02:43 PM

Quote:

Originally Posted by House of Laughter


	Jejton, The nature of a closed loop is exactly that - it's closed, so there are no risks of leaking. The drain and returns are both plumbed into the pump, so the water only goes through the pump and not into the sump. Hope that helps. D, I can bring you flex PVC on Wednesday when I do the run into the city - let me know if you want - House

Ok so Im not THAT ignorant! But what if there is a failiure in a seal somewhere along the line ? Is that just a really really remote possibility that its not worth worrying about?

Dmitry · 08-05-2007, 03:15 PM

Tanks have huge seals on every corner. Any one of them can come undone at any point. Except that they almost never do.

Dmitry · 08-11-2007, 02:31 PM

So, this is the configuration for the closed loop Mike and I came up with. There's going to be an old stereo rack next to the tank (to put various things on) and we're putting the external pump on the top shelf. Once this was done we thought perhaps putting it on the floor - as we originally thought - would have been better after all...but it's a bit late for that. So what do you guys think?

**nanoreefer22** · 08-11-2007, 02:35 PM

LOoks good but I have another question. If you want to clean the pump, how are you going to do it? I see valves on both of the return lines but not valve on the intake line. If you remove the pump for cleaning how are you going to stop water from coming down the intake line?

Dmitry · 08-11-2007, 02:40 PM

Doh! Good catch. We wondered why we had one extra!

**bad coffee** · 08-11-2007, 02:50 PM

Looking good.

You'll need another union as well with that ball valve.

B

08-05-2007, 10:50 AM	#23
House of Laughter www.saltwatercritters.com Join Date: Dec 2002 Location: Ossining, NY Posts: 10,303 Reefer Ratings: (124) Friends: (36)	Jejton, The nature of a closed loop is exactly that - it's closed, so there are no risks of leaking. The drain and returns are both plumbed into the pump, so the water only goes through the pump and not into the sump. Hope that helps. D, I can bring you flex PVC on Wednesday when I do the run into the city - let me know if you want - House __________________ House of Fish (914) 424-0366 www.saltwatercritters.com Serving all your saltwater critter and reef needs

08-11-2007, 02:31 PM	#27
Dmitry Senior Member Join Date: May 2005 Location: Queens (Briarwood) Posts: 1,228 Reefer Ratings: (24) Friends: (0)	So, this is the configuration for the closed loop Mike and I came up with. There's going to be an old stereo rack next to the tank (to put various things on) and we're putting the external pump on the top shelf. Once this was done we thought perhaps putting it on the floor - as we originally thought - would have been better after all...but it's a bit late for that. So what do you guys think? Attached Thumbnails

08-11-2007, 02:35 PM	#28
nanoreefer22 YoYa Join Date: Jan 2005 Location: Park Slope, Brooklyn Posts: 10,074 Reefer Ratings: (77) Friends: (21)	LOoks good but I have another question. If you want to clean the pump, how are you going to do it? I see valves on both of the return lines but not valve on the intake line. If you remove the pump for cleaning how are you going to stop water from coming down the intake line? __________________ Kris MR Team

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08-05-2007, 02:42 AM	#22
jejton Senior Member Join Date: Jan 2006 Location: Suffolk Posts: 1,542 Reefer Ratings: (10) Friends: (1)	Excuse my ignorance but what safetys are there against the tank draining if there is a leak in the closed loop?

08-05-2007, 12:02 PM	#24
Dmitry Senior Member Join Date: May 2005 Location: Queens (Briarwood) Posts: 1,228 Reefer Ratings: (24) Friends: (0)	Jejton: and with ball valves behind each drilled hole you can remove the pump for maintenance without draining the tank. Jim, I'm sending PM.

08-05-2007, 03:15 PM	#26
Dmitry Senior Member Join Date: May 2005 Location: Queens (Briarwood) Posts: 1,228 Reefer Ratings: (24) Friends: (0)	Tanks have huge seals on every corner. Any one of them can come undone at any point. Except that they almost never do.

08-11-2007, 02:40 PM	#29
Dmitry Senior Member Join Date: May 2005 Location: Queens (Briarwood) Posts: 1,228 Reefer Ratings: (24) Friends: (0)	Doh! Good catch. We wondered why we had one extra!