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#16
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Is a Air Pump necessary?
Theo wrote Do not buy cheap air pumps as they will fail very soon.
I got my air pump from http://www.aquaticecosystems.com good site (standard disclaimer applies) k30a |
#17
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Is a Air Pump necessary?
O2 enters water by its contact with it. So with that said the more surface
area you have for air to contact the water the quicker O2 can be (re)absorbed. However, once the surface water is saturated with O2 no more O2 will be absorbed in the pond. Very little O2 is added to water via the air that comes out of an airstone. It's main purpose is to agitate the water surface and create current so that the saturated surface water that was exposed to the air drops and O2 depleted water raises to the surface. If you had an airstone that made it so that there were always 1,000 bubbles with a size of 1/32 of an inch in your water you'd only be adding around 12 square inches of surface area to your pond. That's a 3"X4" square. If you have a pump that's creating current in your water you're fine. Now using a fountain is a great way to get O2 in the water because you're generating a HUGE amount of surface area because the water is being blown apart into droplets and wrapped around by air. You'd be better served though to have the pump for the fountain at the bottom of the pond. If it's input is at the top of the pond you're saturating water you just saturated. This is why those big air stone disks for rec ponds work so well. Ponds less then 8-12 feet don't stratify (meaning there is no current caused by different temperatures of water raising and failing). The disks are placed at the bottom of the pond and make a current that takes the low O2 air at the bottom and pushes it to the top of the pond to get saturated. Sam "FBCS" wrote in message ... I have read lots have natural ponds/VG filter no falls and they do not talk of the need for an air pump/stone. How necessary is a air pump/air stone to the health of the pond? Do you calculate size by gal with this type of pump also. If not what would be a typical size for a pond, better yet, what do you use? Joann |
#18
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Is a Air Pump necessary?
"Lee Brouillet" writes:
I understand, Andrew. And I prefer to keep the O2 in my water at saturation, not "less than". As do I. A spray bar on the water return to your pond would help with the pond's O2 levels; the spray bar to your filter is excellent for keeping the biobugs happy, but may not do too much for the fish once the water gets back to the pond. I don't see your logic here. The biobugs consume a fixed amount of oxygen regardless of where aeration occurs (as do the fish). Aerating the water in the filter aerates the pond. Its the way to go if you don't want the noise or appearence of aeration in the pond itself. |
#19
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Is a Air Pump necessary?
Thanks all - for your imput. Joann
"FBCS" wrote in message ... I have read lots have natural ponds/VG filter no falls and they do not talk of the need for an air pump/stone. How necessary is a air pump/air stone to the health of the pond? Do you calculate size by gal with this type of pump also. If not what would be a typical size for a pond, better yet, what do you use? Joann |
#20
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Is a Air Pump necessary?
In , on 08/01/03
at 02:54 PM, "Theo van Daele" said: But !: (big but) Do not buy cheap air pumps as they will fail very soon. The good ones are more expensive than you'd expect (IMHO) I have the Tetra G Luft pump. Still going strong in its seventh year. Alan -- --------------------------------------------------------------------- **** Please use address ) to reply via e-mail. **** Posted using registered MR/2 ICE Newsreader #564 --------------------------------------------------------------------- |
#21
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Is a Air Pump necessary?
good aeration also helps move other gases up and out of the water... like CO2 and
H2S. Ingrid "Theo van Daele" wrote: And I prefer to keep the O2 in my water at saturation, not "less than". Agreed 100 %. O2 is one of these things you can never overdose. Lots of plants / morning / thunderstorm impending / some decaying mulm... one would be amazed how much O2 levels can drop in just a few hours. Fish need O2 more than they need water so to speak. But !: (big but) Do not buy cheap air pumps as they will fail very soon. The good ones are more expensive than you'd expect (IMHO) Learned this the hard way. Theo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. |
#22
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Is a Air Pump necessary?
just aerating the filters is not the same. everything in the pond needs oxygen too
AND aeration moves unwanted gases out of the pond. Ingrid Andrew Burgess wrote: I don't see your logic here. The biobugs consume a fixed amount of oxygen regardless of where aeration occurs (as do the fish). Aerating the water in the filter aerates the pond. Its the way to go if you don't want the noise or appearence of aeration in the pond itself. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. |
#23
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Is a Air Pump necessary?
wrong.. a great deal of air exchange occurs between the small air bubbles and the
water... those fine bubbles have a tremendous surface area and it not only puts air (all the molecules of gases in air, not just oxygen) into the water, it lightens the water and moves the water to the surface where it helps degas the CO2 and H2S and other unwanted gases. think about sponge filters and how an airstone down inside them creates enough of a suction that it pulls crap from the tank into and thru the sponge. Ingrid Very little O2 is added to water via the air that comes out of an airstone. It's main purpose is to agitate the water surface and create current so that the saturated surface water that was exposed to the air drops and O2 depleted water raises to the surface. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List Manager: Puregold Goldfish List http://puregold.aquaria.net/ www.drsolo.com Solve the problem, dont waste energy finding who's to blame ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unfortunately, I receive no money, gifts, discounts or other compensation for all the damn work I do, nor for any of the endorsements or recommendations I make. |
#24
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Is a Air Pump necessary?
Ingrid,
The amount of surface area a few hundred bubbles adds is insignificant, compared to the surface area of the pond. See a post made by Jagath last year. I could go through the math again, but he did a much better job then I could. In that particular post, he was discussing the value of using an airbubbler to keep a hole open over winter, and how an airbubbler affects the gas exchange. http://groups.google.com/groups?q=bu...pam.com&rnum=1 http://tinyurl.com/iufg The main thing an airbubbler does, is create circulation. The water follows the air bubbles to the surface. But the same could be done with a pump, and that sucks water from the bottom and discharges it at the surface of the pond. Sameer wrote in message ... wrong.. a great deal of air exchange occurs between the small air bubbles and the water... those fine bubbles have a tremendous surface area and it not only puts air (all the molecules of gases in air, not just oxygen) into the water, it lightens the water and moves the water to the surface where it helps degas the CO2 and H2S and other unwanted gases. think about sponge filters and how an airstone down inside them creates enough of a suction that it pulls crap from the tank into and thru the sponge. Ingrid Very little O2 is added to water via the air that comes out of an airstone. It's main purpose is to agitate the water surface and create current so that the saturated surface water that was exposed to the air drops and O2 depleted water raises to the surface. |
#26
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Is a Air Pump necessary?
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#27
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Is a Air Pump necessary?
Andrew Burgess writes:
writes: just aerating the filters is not the same.i Oh? I suppose biofiltering in the filter isn't the same as doing it in the pond either? Saturate the water in the filter and the whole pond gets saturated. everything in the pond needs oxygen too The water circulates. If you want to pick nits, there is a slight difference between aerating in the filter and then pond. It changes who gets to use the oxygen first. So if you aerate to saturation in the filter, the biofilter consumes a little and the fish see a tiny bit less than saturation. The bottom line is if you don't want aeration in the pond because of appearance or noise then put it in the filter and you won't notice a difference nor will the fish. |
#28
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Is a Air Pump necessary?
Boy I stirred up a lot of bubbles with this thread (LOL), but great
information. "FBCS" wrote in message ... Thanks all - for your imput. Joann "FBCS" wrote in message ... I have read lots have natural ponds/VG filter no falls and they do not talk of the need for an air pump/stone. How necessary is a air pump/air stone to the health of the pond? Do you calculate size by gal with this type of pump also. If not what would be a typical size for a pond, better yet, what do you use? Joann |
#29
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Is a Air Pump necessary?
LOL...I know, i am laughing picturing you sitting there with a pencil
and tablet doing all these math equations. On Sun, 03 Aug 2003 02:38:24 GMT, "FBCS" wrote: Boy I stirred up a lot of bubbles with this thread (LOL), but great information. "FBCS" wrote in message ... Thanks all - for your imput. Joann "FBCS" wrote in message ... I have read lots have natural ponds/VG filter no falls and they do not talk of the need for an air pump/stone. How necessary is a air pump/air stone to the health of the pond? Do you calculate size by gal with this type of pump also. If not what would be a typical size for a pond, better yet, what do you use? Joann |
#30
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Is a Air Pump necessary?
i have a pump that pushes the water up so that it falls back into the pond.
this aerates the water during the hot months. in the winter when i turn the water pump off, i use a small air pump i once used for my aquarium. i keep it under a ceramic quail so it will stay dry. all it does is bubble a bit to keep any possible ice from forming, which has only happened once, since i'm out here in southwest texas. i don't want the colder water to mix with the warmer water so i don't put the tube and airstone down deep. i've never lost a fish (knock on wood). this is a small, stocktank pond. YMMV... mad -- See my zone 8B pond: http://community.webshots.com/album/14478479WdPMkPBPmt http://community.webshots.com/album/40739268OAqLln Rec.ponds FAQ: http://www.geocities.com/justinm090/faq.html Whoso diggeth a pit shall fall therein... Prov 26:27 From: "FBCS" Newsgroups: rec.ponds Date: Fri, 01 Aug 2003 01:45:23 GMT Subject: Is a Air Pump necessary? But you didn't answer the second part of my question. If airation w/ airstone is necessary what size and type do I look for. They do not hang at the top, but they are in full sun most of the day and in only 18" of depth until I can finish digging. They is a slight waterfall they love to play in and swim against the flow. "BenignVanilla" wrote in message ... "Sam Hopkins" wrote in message .. . Unless your fish are hanging at the top of the water gasping you dont need an airstone. "FBCS" wrote in message ... I have read lots have natural ponds/VG filter no falls and they do not talk of the need for an air pump/stone. How necessary is a air pump/air stone to the health of the pond? Do you calculate size by gal with this type of pump also. If not what would be a typical size for a pond, better yet, what do you use? Joann Sam, I think scientifically this is probably true, but if someone is strangling you, would you like them to stop now, or wait until you turn blue? Either way you will probably live, but which is really better? It's cheap and easy to aerate. BV. -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 80,000 Newsgroups - 16 Different Servers! =----- |
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