Hi can any one help me, im a novice at this goldfish stuff, but i have had some goldfish in the past which have lasted for years and years.
Recently i have purchased 3 new gold fish, i have done the normal cleaning and sterilising of the tank, but im getting a lot of cummalative bubbles staying on top of the tank all most like its frothing, i have a flitter sysem in, 2 plants and plenty of gravel, can any one help me?
sue

Could it be a combination of aeration and a chemical water additive?

The same thing happened to me when my tank was cycling- I don't know whether it was the cycling itself or the high level of aeration, but I removed my bubblestone until the tank had completely cycled and the frothing stopped.

It could be a few things... medications, too much water conditioner, dirty water in need of a water change, or some other junk in the water (remnants of lotion, etc)

I'm apt to say you either need a big water change or you accidentally put too much conditioner in. That's what happened to me a few times.

From my experience it is related to cycling a new tank and/or a lot of water conditioner.

As the frothing only happened when the tank was fairly new it could have been either or both of those things.

I blot the froth up with paper towels each day and eventually it stops happening, after a week or so.

While your tank is new remember to change approx. 20% of your water every second day and only use enough water conditioner to treat the fresh water, not the whole tank.

It would probably be a good idea to do water changes every second day for around 3 weeks, then cut back to twice a week for another fortnight, then go weekly.

If you aren't familiar with 'cycling a new tank', check out Koko's homepage and click on Tank Cycling.

Cheers! Annette