bubble question

[CarolC]

Are you suppose to have tiny bubbles in the aquarium floating around? And also there is some on top of the water.


MY:
PH 7.5 by tetra test tube
KH 300 (this is by those strips)
NH3/NH+4 0 AP
NITRITE 0 AP
NITRATE 0 AP

29 gallon
2 65watt coralife (only use one)
diy 2liter and hagen
plants and fish

[Wasserpest]

Do you know where the bubbles originate from?

There are several possible sources of bubbles.

1) After water changes, gases come out of solution. Old wisdom says that this can be dangerous for your fishies, if you change water too much/too rapidly.

2) If you have lots of growing plants, plenty of light and nutrients, oxygen saturation can reach and exceed 100%, which results in oxygen bubbles building on plants. Tiny injuries will release streams of oxygen bubbles.

3) Some filters start spitting bubbles as oxygen saturation occurs. Especially if the filter medium is clogged, the impellor causes some negative pressure which pulls oxygen out of solution. I don't think it bothers the fish, just might be aesthetically undesired.

If they collect on the water surface, you might experiencing something known as "surface scum". There have been plenty of discussion about the what, where and how to get rid of it, do a quick search if you think that might be the issue.

[CarolC]

Yes I did change about 25% of the water yesterday. I just started with the diy co2 I have the tube ran into the intake tube. Have a whisper power 30 filter. The bubbles going into the intake look like you have a diffuser on the end

I have alot of plants about 12 different ones


2 angles
11 cardinal tetras
2 cory
1 flying fox
3 otts
1 small pecmos(sp)

[Wasserpest]

Okay, so it's probably due to the water change. Scratch #3 as this only applies to canister filters.