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fishin4cars
True friends just call me Larkin
I am very pleased with my pondmaster AP-40 although I think the AP-20 would have been plenty for my pond. From all I have read the deepest point in the pond should be one primary place to get air going, I also aerate the bio-filter to get more oxygen to the bacteria.
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Yes it does.
koiguy1969
GIGGETY-GIGGETY!!
the farther the water falls from your falls the more aeration it gives. it picks up more oxygen on the way down and penetrates the ponds water deeper. the further back up the bubbles created have to travel, the more oxygen is absorbed.
fishin4cars
True friends just call me Larkin
The more moving air and water contact you get the higher the oxygen, water falls, streams, surface jets and air bubbles are all great at increasing Oxygen levels, By using the natural air, (NO Direct pure Oxygen being injected) You will get to a saturated point and that is as high as it will go, great thing about that is, that's the perfect amount for fish! So as long as your getting the same air you breath and getting it well mixed into the water you CAN'T get too much. only to little.
i aerate my filter and my pond without the use of electricity, using a hose on an angled outlet from the filter (i have 2, 1 to the deep end and 1 in the middle), the angled outlet gurgles and sucks in air with the water and carries it down into my pond,
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mogsie said:
Can you post a drawing or a picture to show peeps what you have done?
Good way to do it, love the no electricity.
yes ile get some photo's up soon
ok so here it is, there is differant ways to do this here is 2, in the first picture you will see 2 green hoses coming from my filter tank, the one on the right has a 90 degree elbow fitting on the inside which has a length of pipe cut to length so it just under the water surface, as you will see in the second photo, as the water rushes in it pulls in air with it, the hose on the right doesnt have a elbow on the inside but the pipe fitting enters the tank half way level with the water surface, so again as the water flows in and down the hose it pulls air along with it as you will see in 3rd picture, the last 2 pictures show the air bubbles rising in the pond, this works reliable aas long as your water level in the filter tank stays the same, the hose neds to drop right after the tank to build water speed, this works better with smooth hose, i just put some black corrugated hose around the gren hose so it doesnt stand out in the water,
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Ok, perhaps Im slow, but I dont understand it mogsie. lol.
This is a pump fed filter with gravity return right? Can you explain it to my imaginary 5 year old nephew? :regular_waving_emot
Anyway, one more way to mix air in your water is using a venturi. I does lower your pumps capacity a bit, but its a simple, cheap and very effective way to add air. If you have a pump fed filter, you can add the venturi just before the filter, which is perfect (filter bacteria need and consume lots of oxygen), except if your first filter is a vortex, as the air bubbles will be carried in to the vortex and the rising bubbles will probably disrupt the process of sinking particles. If you have a gravity fed filter, you can put the vortex in your pond in the return pipe. Though I read you shouldnt do that if your return is too deep. Not sure why.
This is a pump fed filter with gravity return right? Can you explain it to my imaginary 5 year old nephew? :regular_waving_emot
Anyway, one more way to mix air in your water is using a venturi. I does lower your pumps capacity a bit, but its a simple, cheap and very effective way to add air. If you have a pump fed filter, you can add the venturi just before the filter, which is perfect (filter bacteria need and consume lots of oxygen), except if your first filter is a vortex, as the air bubbles will be carried in to the vortex and the rising bubbles will probably disrupt the process of sinking particles. If you have a gravity fed filter, you can put the vortex in your pond in the return pipe. Though I read you shouldnt do that if your return is too deep. Not sure why.
lol ok, yes it is a pump fed filter with a gravity return via the 2 green hoses but mainly through the 40mm pipe in the middle that feeds the waterfall, basically as the water rushing into the pipe fittings it pulls in air and traps it in with the water, have a look at this thread, https://www.gardenpondforum.com/mogsies-bio-veggie-filter-t7307.html
if you require more info on the workings of my filter,
if you require more info on the workings of my filter,
koiguy1969
GIGGETY-GIGGETY!!
vertigo72
the further you run a venturi into the pond the more the bubbles join together and form larger bubbles which may surface and break the waters surface tension but their effectiveness is minimalized...producing more smaller bubbles provides more surface area to allow oxygen absorbtion by the water. the same amount of air in 500 bubbles is less effective than it is in 1000 and far less than 5000 etc...smaller bubbles also move more water up the column for more circulation.
checkout the demonstration video i made of a simple venturi in action on this page link
https://www.gardenpondforum.com/beneficial-bacteria-t5541p2.html
the further you run a venturi into the pond the more the bubbles join together and form larger bubbles which may surface and break the waters surface tension but their effectiveness is minimalized...producing more smaller bubbles provides more surface area to allow oxygen absorbtion by the water. the same amount of air in 500 bubbles is less effective than it is in 1000 and far less than 5000 etc...smaller bubbles also move more water up the column for more circulation.
checkout the demonstration video i made of a simple venturi in action on this page link
https://www.gardenpondforum.com/beneficial-bacteria-t5541p2.html
i get loads of bubbles, some big some small it is constantly varying in bubble size, one hose goes about 3/4 the way down into the deep end and the other goes about 8 inches deep into the shallow end, i get oxygen from my plants and waterfall so this is just additional, and looks nice also,
mogsie said:
Ok, so its actually a venturi, just one with almost zero water pressure as it on the gravity return. Frankly I doubt that will mix a lot of air, but just create some large "burps". At least it wont cost any circulation volume so I guess its better than nothing, but not by much.