fish at the top

[0wen_96]

I did a 50% water change on my angelfish tank a few hours ago, i took out one of my 2 air stones since i was planning on putting in some amazon frogbits soon. 2/5 of my angelfish are now hovering at the surface and one of my rams is too. They act normally when i place the airstones back in idk what wrong. One thing i added was water conditioner and i dont think its that.

 

[tlindsey]

I did a 50% water change on my angelfish tank a few hours ago, i took out one of my 2 air stones since i was planning on putting in some amazon frogbits soon. 2/5 of my angelfish are now hovering at the surface and one of my rams is too. They act normally when i place the airstones back in idk what wrong. One thing i added was water conditioner and i dont think its that.View attachment 1504593View attachment 1504594

Place the other airstone back . Both airstones were providing enough surface movement for adequate oxygen.

 

[tlindsey]

One thing i added was water conditioner and i dont think its that.

What type of water conditioner?

 

[0wen_96]

Place the other airstone back . Both airstones were providing enough surface movement for adequate oxygen.

Did, they all went back down except the ram. The other ram seems to be guarding something(probably eggs since theyve spawn before)

What type of water conditioner?

Aquasafe plus

 

[skjl47]

What type of water conditioner?

Hello; Good question.

I have been reading about the water conditioners over the years and do recall a possibly pertinent bit. That being these conditioners used to deal with chlorine/chloramine do so by attaching to these chemical compounds. If too much conditioner is added the conditioner may attach to other things in the water. Best i can recall one thing may be free oxygen dissolved in the water.
So in addition to what sort of conditioner we may need to know the dosage used.

The ram lingering near the surface may be because it has a greater need of oxygenated water. The air -water interface is where oxygen from the air can diffuse into the water. Air bubbles help by keeping the surface agitated so improves oxygen content. Also, likely a small amount of oxygen from the bubbles themselves.

One last question. Have you been doing 50% water change (WC) on a regular basis once or twice a week for some time or was this a rare event?

 

[duanes]

Place the other airstone back . Both airstones were providing enough surface movement for adequate oxygen.

Agree with this, it sounds like 1 airstone is "not" providing enough current to across the length of the tank maintain proper gas exchange for the entire strata and lower area of the tank.
Although aIrstones pull water up, to help mix layers, a single stone may only be pulling water up from a limited area (depending on the stength of the air pump), leaving the other end, where strata aren't getting mixed, a sort of anoxic zone. (dead zone).
Although angelfish prefer placid water, they are riverine, so a continuous directional flow across the lentire ength of the tank may be needed.
If you didn't want to add more airstones, adding a power head or directional pump to mix the entire tank volume might be another option.
Pump Angle: The Right Powerhead for the Right Flow, Used the Right Way – BRStv Investigates Flow.
The video above shows how to choose a pump for proper mixing in different situations.
I realize it is aimed at reef keepers, but fluid dynamics is fluid dynamics.
Beside my normal sump to tank pump, I use additional water pumps to add extra flow to riverine tanks, and add surface aggition to promote gas exchange.


.

 

[0wen_96]

Hello; Good question.

I have been reading about the water conditioners over the years and do recall a possibly pertinent bit. That being these conditioners used to deal with chlorine/chloramine do so by attaching to these chemical compounds. If too much conditioner is added the conditioner may attach to other things in the water. Best i can recall one thing may be free oxygen dissolved in the water.
So in addition to what sort of conditioner we may need to know the dosage used.

The ram lingering near the surface may be because it has a greater need of oxygenated water. The air -water interface is where oxygen from the air can diffuse into the water. Air bubbles help by keeping the surface agitated so improves oxygen content. Also, likely a small amount of oxygen from the bubbles themselves.

One last question. Have you been doing 50% water change (WC) on a regular basis once or twice a week for some time or was this a rare event?

Dosage is 40 gallons (10 g/5ml) my tank is 75g so i pulled roughly around 35 gallons out. And yes the 50% water change isnt frequent and i only fid it cause of a BBA bloom, I usually only do around a 20-25% change.

Agree with this, it sounds like 1 airstone is "not" providing enough current to across the length of the tank maintain proper gas exchange for the entire strata and lower area of the tank.
Although aIrstones pull water up, to help mix layers, a single stone may only be pulling water up from a limited area (depending on the stength of the air pump), leaving the other end, where strata aren't getting mixed, a sort of anoxic zone. (dead zone).
Although angelfish prefer placid water, they are riverine, so a continuous directional flow across the lentire ength of the tank may be needed.
If you didn't want to add more airstones, adding a power head or directional pump to mix the entire tank volume might be another option.
Pump Angle: The Right Powerhead for the Right Flow, Used the Right Way – BRStv Investigates Flow.
The video above shows how to choose a pump for proper mixing in different situations.
I realize it is aimed at reef keepers, but fluid dynamics is fluid dynamics.
Beside my normal sump to tank pump, I use additional water pumps to add extra flow to riverine tanks, and add surface aggition to promote gas exchange.
View attachment 1504597

View attachment 1504598.

Would putting a spray-bar on my filter work. Its a FX6 but idk if itll be enough

 

[tlindsey]

Would putting a spray-bar on my filter work.

Yes it could if placed correctly.

 

[skjl47]

Dosage is 40 gallons (10 g/5ml) my tank is 75g so i pulled roughly around 35 gallons out. And yes the 50% water change isnt frequent and i only fid it cause of a BBA bloom, I usually only do around a 20-25% change.

Hello; Thanks for the info. After doing smaller WC over time a sudden large WC can cause some changes. One i can recall reading of is a swing of pH. The recommendation I follow is to build up to larger volume WC over a series of changes. Say if the normal WC is 20% once a week, start with a 25-30% WC twice a week, then 30-40 % in a few days, then 50% in a day or two.

Now that duanes is involved in the thread you have very experienced and knowledgeable help.

 

[0wen_96]

Hello; Thanks for the info. After doing smaller WC over time a sudden large WC can cause some changes. One i can recall reading of is a swing of pH. The recommendation I follow is to build up to larger volume WC over a series of changes. Say if the normal WC is 20% once a week, start with a 25-30% WC twice a week, then 30-40 % in a few days, then 50% in a day or two.

Now that duanes is involved in the thread you have very experienced and knowledgeable help.

Oky ill keep that in mind for next time. Also just came back home and it seems like the water change rlly shocked him. Found him dead under the driftwood. He wasnt doing the best before hand anyways so i feel like the 50% rlly got to him. RIP