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Aeration Bubbles
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Hi,
John Howell who has managed the forum for years is getting on and wishes to retire from the role of managing it.
Over the years, he has managed the forum through good days and bad days and he has always been fair.
He has managed to bring his passion for fish keeping to the forum and keep it going for so long.
I wish to thank John for his hard work in keeping the forum going.
With John wishing to "retire" from the role of managing the forum and the forum receiving very little traffic, I think we must agree that forum has come to a natural conclusion and it's time to put it to rest.
I am proposing that the forum be made read-only from March 2022 onwards and that no new users or content be created. The website is still registered for several more years, so the content will still be accessible but no new topics or replies will be allowed.
If there is interest from the ITFS or other fish keeping clubs, we may redirect traffic to them or to a Facebook group but will not actively manage it.
I'd like to thank everyone over the years who helped with forum, posted a reply, started a new topic, ask a question and helped a newbie in fish keeping. And thank you to the sponsors who helped us along the away. Hopefully it made the hobby stronger.
I'd especially like to thank John Howell and Valerie Rousseau for all of their contributions, without them the forum would have never been has successful.
Thank you
Darragh Sherwin
Aeration Bubbles
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31 Oct 2011 17:44 #1
by mech1 (pat bell)
Hi, I have a small problem with the aeration on the tank (juwel vision 180).
I am running a Fluval 205 external and the intank Juwel filter.
My problem is microbubbles from the powerhead in the juwel filter are making the water less than clear looking. I have the venturi airpipe attached and expected bubbles but not these tiny ones that are too small to float up and burst.
My question is: Can I do without the venturi pipe and have no bubbles in the tank? The water surface is well disturbed by the output of the external filter (no splashing but strong rippling). I am hoping to eventually fully stock this tank and hope I can do this without bubbles.
Thanks.
Knocklyon 2 min from J12 M50
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31 Oct 2011 18:04 #2
by mech1 (pat bell)
Not same powerhead but shows what I mean by Venturi Pipe.
Knocklyon 2 min from J12 M50
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31 Oct 2011 18:29 #3
by Jim (Jim Lawlor)
I have an almost identical setup (tetratec ex800 instead of fluval) and never used the venturi - haven't had a single loss in the tank. If I were you, I'd lose the venturi !
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31 Oct 2011 19:36 #4
by igmillichip (ian millichip)
If the air bubbles are making the water unclear then there is something more wrong that the venturi being used.
If this is freshwater, then you may even be able to tell something about the quality of the water from the bubbles.
The use of the venturi is not vital, but there are only very few places where I can see a problem in using it.
I have mine connected.
ian
Irish Tropical Fish Society (ITFS) Member.
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31 Oct 2011 20:45 - 31 Oct 2011 20:46 #5
by mech1 (pat bell)
igmillichip, thanks for replying, its not exactly making the water unclear I maybe discribed it wrong. What is happening is that lots of "normal bubbles" say 2-3mm dia are doing what is expected going up bursting gone. But hundreds of very tiny bubbles are washed away in the outlet stream and taking ages to dissapate causing them to look like dust/impurities in the tank.
I have blocked the venturi pipe and within 2 min all microbubbles gone and tank looks much better.
Just worried if this is detrimental to the Oxygen content in the water to the extent of affecting stocking levels.
Knocklyon 2 min from J12 M50
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31 Oct 2011 21:09 #6
by igmillichip (ian millichip)
If the stocking levels are low then the additional aeration would probably not be necessary. There are some fish that do not take kindly to the stream of bubbles anyway.
But on the whole, increased aeration brings many benefits that outweigh any negatives.
Normally, the bubbles in freshwater are large compared to saltwater. The increase in dissolved solids in salt water will form more of a foaming.
That is why it is easier to use a 'protein skimmer' (foam fractionation) in marine water than it is in freshwater.
If you get these fine foam bubbles in freshwater then it could be that the water has too much dissolved stuff, or there is air being drawn into the powerhead rotor and 'churned' around.
Some medication will also cause foaming.
In an ideal world, tanks should only be stocked to a level that having very little filtration should have little effect. But, we live in a real world and the real world is best worked by having more filtration and aeration than we should require for a given tank size.
Is your tank freshwater?
ian
Irish Tropical Fish Society (ITFS) Member.
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31 Oct 2011 21:16 #7
by mech1 (pat bell)
yes freshwater (at 29c while it cycles) 6 zebra danios, no meds just water conditioner "Nutrafin Aqua Plus"
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31 Oct 2011 21:26 #8
by igmillichip (ian millichip)
It's still cycling?
I would advise using a good amount of aeration during the cycling.
The water is also unstable during the cycling process and you go through stages of foaming due to the conditioner, and also there could be a period of you getting a bacterial bloom (a cloudiness) that is quite normal and rarely harmful during the early days of a new tank.
If you get a bacterial bloom then it is good to increase aeration as the bacteria are using additional oxygen...eventually the tank will stabilise and sort out the bloom.
Also, in a fairly new tank it is advisable to increase aeration to help reduce the effects of ammonia that are most likely to occur during the initial set-up period.
I'll apologise for uninvited advice, but I would say that 29 is a tad too high for danios as they don't need that high a temp (unless you are giving them a once over for white-spot).
Ian
Irish Tropical Fish Society (ITFS) Member.
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