Planted tank with Sump Issues

goalieman59

Junior Poster
Nov 9, 2009
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0
1
I have a 120tall tank with a sump, that is gassing off too much of the CO2 that i am injecting and I am having a algae outbreak. I was wondering what i could do to stop the gassing off. Or could I take the sump out and hook a fx5 to the output and input from the tank? Would this work? Will this be enough water exchange? Any other ideas? Or do you think i should redesign the sump to this set up?
 

Biollante

Lifetime Charter Member
Lifetime Member
Jun 21, 2009
3,210
1
36
Surprise, AZ
Information Please

Hi,

Can you share tank details?

Is that a sealed or open sump?

How, what and where on the CO2?

What are the intakes and outputs between the sump and tank?

How much surface agitation?

Biollante
 

goalieman59

Junior Poster
Nov 9, 2009
4
0
1
Biollante;42997 said:
Can you share tank details?
Tank is a 60x18X24, has a pea gravel/flourite mixed substrate, 210w of PC light from AH Supply.

Biollante;42997 said:
Is that a sealed or open sump?
The current sump is open with a diy wet dry in it, the sump that i am asking about will be sealed.

Biollante;42997 said:
How, what and where on the CO2?
I am injecting CO2 via a Rhinox 5000 diffusor, right now i am pushing 9bps. I have a 5lb tank on a timer, the tank is being replaced by a 20lb tank.

Biollante;42997 said:
What are the intakes and outputs between the sump and tank?
The intake is at the top right of the tank and goes into a over flow through a durso standpipe, the output is coming stirght from pump all the way to the tank. I am planning on creating a spray bar for the output.


Biollante;42997 said:
How much surface agitation?
The only surface agitation is the little bit at the overflow, I am rasing the standpipe to help get rid of that little bit.
 

Gerryd

Plant Guru Team
Lifetime Member
Sep 23, 2007
5,623
20
38
South Florida
Hi,

A sump should be sealed as much as possible to prevent offgassing. Raising the overflow level will also help. Some folks even cover the overflow top.

You could easily toss the sump wet/dry and go a closed loop canister.

Both have pros and cons, but with the sump sealed, you just may need to increase your c02 rate to make up for it.

Just do it slowly and over time.

Extra surface ripple allows for a bit more c02 with the additional 02. Less stress for the critters as well.

Is the tank pre-drilled?

A 120 is a pretty good size tank. Are you sure you have sufficient filtration and flow?

A lot depends on your goals and amount of time you want to spend on the tank. Some elaboration on these subjects may provide more insight....
 

goalieman59

Junior Poster
Nov 9, 2009
4
0
1
Gerryd;43008 said:
Hi,

A sump should be sealed as much as possible to prevent offgassing. Raising the overflow level will also help. Some folks even cover the overflow top.

You could easily toss the sump wet/dry and go a closed loop canister.

Both have pros and cons, but with the sump sealed, you just may need to increase your c02 rate to make up for it.

Just do it slowly and over time.

Extra surface ripple allows for a bit more c02 with the additional 02. Less stress for the critters as well.

Is the tank pre-drilled?

A 120 is a pretty good size tank. Are you sure you have sufficient filtration and flow?

A lot depends on your goals and amount of time you want to spend on the tank. Some elaboration on these subjects may provide more insight....
The tank had a bulit in overflow on it when i bought it used, but the guy I bought it from decided to drill it. As far is flow i am pumping about 1100gph on the tank I am using the output to ripple the top of the tank a little bit the fish seem happier when it is going on. My LFS store guy was telling me that the bulkhead that is my output is a 2 inch. That should put out about 1500gph out. I will be rebuliding the sump starting tonight to go with less surface movment and fixing the standpipe tonight also. Here is the redesign of the sump,

sump design1.JPG