Can I link 2 externals together?

GrubbyGirl

GrubbyGirl

Member
Nov 18, 2009
608
0
16
Kent
I currently have an eheim 2224 (700l/hour) on a 125 l tank with a diffuser. The diffusre works (but not well) until I put a sponge on the inlet and clearly the flow is slightly reduced and that is enough to afferct the diffuser. I need a sponge on the intake as I have fry in the tank. I have just acquired an old ehein 2233 ecco and I was wondering if I could add it but use a simple Y connector so the outflow comes through the one diffuser - would this be ok??
 
dan1801a

dan1801a

Member
Aug 10, 2010
226
0
16
Derby
You may have a problem with back preasure, but 2 one way check valves just before the Y should do that.

Thought about doing this my self, no reason just to see.
 
M

macvsog23

Pleco Profiles Team - RIP FRIEND
May 1, 2009
2,671
0
36
71
Bristol
Easy
One must be dead ie no power
This will expand the filter area
Linking two that are powered will only destroy the bac in one by causing a poss dead area with no ox in it.

I have done it lots of timesthe one you run must be the first one on the line
 
Lornek8

Lornek8

Member
Apr 21, 2009
2,001
0
36
Hawaii
macvsog23 said:
Easy
One must be dead ie no power
This will expand the filter area
Linking two that are powered will only destroy the bac in one by causing a poss dead area with no ox in it.

I have done it lots of timesthe one you run must be the first one on the line
Click to expand...
That's the way I run them. However, I think the OP quesiton was about running to canisters in parralel to one outlet, not in series.
 
M

macvsog23

Pleco Profiles Team - RIP FRIEND
May 1, 2009
2,671
0
36
71
Bristol
Lornek8 said:
That's the way I run them. However, I think the OP quesiton was about running to canisters in parralel to one outlet, not in series.
Click to expand...
yes and my advice is dont do it your pressurising a filter it will have problems one filter must be dead
 
M

macvsog23

Pleco Profiles Team - RIP FRIEND
May 1, 2009
2,671
0
36
71
Bristol
GrubbyGirl said:
I currently have an eheim 2224 (700l/hour) on a 125 l tank with a diffuser. The diffusre works (but not well) until I put a sponge on the inlet and clearly the flow is slightly reduced and that is enough to afferct the diffuser. I need a sponge on the intake as I have fry in the tank. I have just acquired an old ehein 2233 ecco and I was wondering if I could add it but use a simple Y connector so the outflow comes through the one diffuser - would this be ok??
Click to expand...
what would work is using over size pipe Just use a 16/22 conector and take the pipe up to 22 m/m on the pressure side
But you may get back pressure if one is more powerfull
 
scatz

scatz

Retired Staff
Apr 8, 2009
5,379
2
38
48
Devon, UK
i would get one bigger filter to run on that tank, then get 2 small tanks for the 2 small filters, job done. lol
 
Lornek8

Lornek8

Member
Apr 21, 2009
2,001
0
36
Hawaii
Lornek8 said:
That's the way I run them. However, I think the OP quesiton was about running to canisters in parralel to one outlet, not in series.
Click to expand...
Think there might be a misundertanding or i'm having a moment. What I was saying is that I run my filters as you described, in series, the first being "dead/unpowered", the second being powered. One suction line, one pressure line.

macvsog23 said:
yes and my advice is dont do it your pressurising a filter it will have problems one filter must be dead
Click to expand...
Think the OP is trying/asking about running two canisters in parralel, two suction lines and one outlet line. In which case both need to be powered to work.
 
GrubbyGirl

GrubbyGirl

Member
Nov 18, 2009
608
0
16
Kent
If I run them in series then I wouldn't get the effect I want would I (increasing the flow at the outlet so the diffuser works)? If that wont work (and I understand why as one is more powerful that the other it could cause back pressure on the smaller one) would 1 way check vales solve that problem? Not sure where I would get those from though!!

Failing that anyone want to buy a 2233 so I can get another 2075????
 
D

dw1305

Global Moderators
Staff member
May 5, 2009
1,396
0
36
Wiltshire nr. Bath, UK
Hi all,
Could you get a much coarser sponge for the intake? I don't buy mine, I just make them from some ppi10 sponge sheet. They should have very little effect on water flow, but keep the fry safe.

This is the one for a 2nd hand Eheim 2213. You can see the wavy seam where i sewed it up with nylon thread (I'm not very good at sewing). The sheets are cheap from "Kettering Koi" or similar.



cheers Darrel
 
You must log in or register to reply here.
Top Bottom