In and out positions for externals

[xingu]

In any tank I have ever had I have placed the in and the out from a canister on opposite sides of the tank.

Was wondering today whether in a quest for good strong current that it may be better to place them the same side?

My scape has to go left to right as the right side is visible whereas the left is against the wall.

Provided i have room in the hood can you see any issues with having 2 spray bars on the same side as 2 intakes? Presumable should create a really strong clockwise current on the below tank.

Added advantage is that I can hide the intakes behind my wood for a show tank look.

 

[IanB]

I run mine on the same side.. had a few like that in years past with no apparent issues.

And that's a lovely looking display you got there xingu.. :yes:

 

[xingu]

Cheers bud.

The internal will go as well so I can shift everything 3 or 4 inches left

 

[Tener ds]

thats a sexy lookin tank xingu..:drool:

 

[matubula]

I usually run mine at opposite ends to each other. I do this because less solid detritus gets sucked in due to greater current. So this mean that most detritus collects under the outlet and I can deal with it either by more powerful mechanical based filtration or by siphoning. But I am at the extreme end with my large amount of Panaque.

 

[bigbird]

nice tank. That should be no problem at all. I have one tank with both on one side and also no problem, the current is however quite strong, keep that in mind for the fish you have. I have the other tank with one on each side, however the spray hole on one points down and the other up so I get a circular motion. cheers jk :thumbup:

 

[dw1305]

Hi all,
Quality tank,

Was wondering today whether in a quest for good strong current that it may be better to place them the same side?

I think generally it is best to have them on the same side, but I don't think it is of major importance. Matt's point is probably more important, you really don't want any of the bulky organic debris (faeces, saw-dust etc) ending up in the filter, unless you have a hugely over-rated filter specifically designed to deal with solids.

Both the High Tech. "planted tank" people and Marine tank keepers have been very interested in flow, because of the need to spread CO2 and planktonic food items all around their tanks,<http://www.advancedaquarist.com/2007/1/aafeature/>, and they've found that linear flow is the key. For this reason I like the flow to go along the long rear side of the tank (from both internal and external), and the external intake (with sponge <http://www.plecoplanet.com/forum/showthread.php?p=92248&highlight=diy+sponge#post92248>) to be at the same end of the tank (at the corner of the front and side glass), with the water following a long oval course. I've stopped using a spray bar for these reasons, and I now have an Eheim venturi end on the external filter. The venturi only works if it doesn't dramatically slow flow speed, and kicks out extremely fine bubbles with a long residence time in the water column.

This does all have some application to keeping rheophilic fish, because faster flow speeds will lead to a more heavily oxygenated tank.

There is a little bit about this in "Aeration and dissolved oxygen in the aquarium" <http://plecoplanet.com/?page_id=829>.

cheers Darrel

 

[xingu]

Reading this on a bb but will take a look at those links when on a PC, thanks in advance
Posted via Mobile Device

 

[Brengun]

Don't really matter where the outlet goes as long as its in the tank somewhere or else you will end up with an empty tank lol.