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Increase/maximise flow with an internal

Broomy

Broomy

Member
Joined
14 Nov 2011
Messages
37
Location
Northern Ireland
Currently have a fluval 2 plus filtering my 2'x1.2'x1' and I have it positioned at the top left & back of the tank. My reason being to break the surface for the fish. Since reading up here I've seen a lot of tanks with internals placed down the bottom of the tank. Is it best to have it right down the bottom to increase the flow down nearer the plants? Or am I ok with it as is? Plants at the minute are ok, not melting but not great so looking to maximise potential with flow.
 
Hi

I didnt get the post!? The "internals placed at bottom" part. Internals are usually fixed (as in Juwel tanks) or movable that are attached to the glass using suckers. Perhaps you are confusing the intake tubes of cannisters (external filters) with this?

The main idea is to increase the flow/circulation. Do it by coherently adding the outputs from different filters in such a way that all tank parts get enough circulating water irrespective of the plant mass and hardscapes etc. You can do it in many ways.. The surface thing has to do with healthy gas exchange without causing too much CO2 escape (if you are adding one), and encouraging O2 exchange. So good flow but no rigourous surface breaking is to be aimed at.

cheers
niru
 
niru said:
Hi

I didnt get the post!? The "internals placed at bottom" part. Internals are usually fixed (as in Juwel tanks) or movable that are attached to the glass using suckers. Perhaps you are confusing the intake tubes of cannisters (external filters) with this?

The main idea is to increase the flow/circulation. Do it by coherently adding the outputs from different filters in such a way that all tank parts get enough circulating water irrespective of the plant mass and hardscapes etc. You can do it in many ways.. The surface thing has to do with healthy gas exchange without causing too much CO2 escape (if you are adding one), and encouraging O2 exchange. So good flow but no rigourous surface breaking is to be aimed at.

cheers
niru
Click to expand...

Sorry, I should've been more clear when writing my post 😳 Thanks for the reply by the way :thumbup:

I don't have much scope for having more than one output due to the size of my tank, & with not having an external filter I was wondering if there was anything else I could do to aid flow? Also if I place my internal down at the bottom of the tank would that be better than where I have it at the minute (at the top)?

I'm using the easy carbo method, would rippling of the water let it escape or as it is liquid would it be ok with the rippling?
 
Hi

check out the post viewtopic.php?f=34&t=1275 , particularly about the flow setup... (assuming you havent already done so), and also ignoring your non-ignorance about flow-y matters 🙂

-niru
 
easy carbo won't escape from your tank

I would say you want the filter up in the tank but pointing down, the upper layer of water has CO2/O2 from the atmosphere but the lower layer won't have unless you force water down there
 
Cheers, I didn't think of that but after scouring the interweb all evening i've come to the conclusion that there isn't one available for the fluval 2 plus, only a 'venturi nozzle' for aeration 🙁

Maybe an investment in a new filter is the only way forward? In the meantime i've moved the filter down to the floor of the tank & turned up the flow to see if theres any improvement.
 
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