Aquaponics & Dissolved Oxygen: The Basics
If you’re an aquaponic producer, or if you’re thinking about getting into aquaponics, you’ll need to consider dissolved oxygen levels in your system. In this video, Nate Storey, Co-Found of…
25 Responses to Aquaponics & Dissolved Oxygen: The Basics
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Hi love your videos. I have an Aquaponic system. I have been growing plants
this way for 3 years in a small commercial way. I have my fish and plants
in the same pool. I float my plants on top of the water with the fish
swimming underneath. I have a separate bio-filter. This system has it’s own
unique problems. Getting the nutrient levels right is a challenge. I am in
Queensland Australia.
REGINA LUKOSZEK
March 27, 2015 at 4:36 am
Hi, I live at 7,000 feet in Flagstaff AZ. What problems can i expect with
having enough DO? What would be some simple solutions. I was thinking an
air stone but dont want to run the extra electricity unless its necessary.
I am still planning but want to avoid a high altitude mistake.?
matt smith
March 27, 2015 at 4:42 am
Get successful with #dissolved #oxygen and #aquaponic production.
Vertical Food Blog
March 27, 2015 at 5:39 am
Thank you Nate for all your great info. My wife and I are in the process
of creating an aquaponics system. We have a question on “DO”, when the
water temperature is high, would it help to divert the circulating water
down into the ground into a coil to pull the cooler temperature out of the
ground in order to cool down the system water; thereby not impacting the
“DO”? Would this really help? Thanks
Linden Riley
March 27, 2015 at 6:18 am
Where do you guys get fingerlings, I am having a hard time finding some, I
would like tilapia, trout or any other fish that’s edible.
terry ehlers
March 27, 2015 at 6:55 am
what is a normal range on a meter for D.O.???? can you let us in on normal
levels of D.O???
Thumpiez
March 27, 2015 at 7:54 am
will using an airpump/airstone help in creating more DO in your tank?
Tim Collins
March 27, 2015 at 8:49 am
Hey Nate! Thanks for all your videos. I’ve learned a lot from you! I found
the answer to the question I had in one of your other videos. But thought
I’d write to let you know there was another person out there watching and
learning from your videos. And that I’m gratefull for your help. Hope you
end up happy, healthy, and rich brother!!!! Some guy named Matt from CA…
mpscheiner
March 27, 2015 at 9:16 am
I’m glad we can help. Thanks for watching. Yeah, we’re on the front end of
Zucchini season again here in Laramie. Time to get inventive. . . . Thanks
for the tip on zucchini chips. I’ll try them out! 🙂
Bright Agrotech
March 27, 2015 at 9:51 am
Venturi fittings are really nice, Enrique. They’re just one of those things
that in some systems they can be kind of irrelevant. In systems with an
oversized pump (pumping more water than you technically need), a venturi
pump can be a great way to facilitate gas exchange and introduce more DO to
your system (especially if you don’t want to invest in an air pump). That
said. Venturi fittings can tend to be redundant. It really depends on your
situation and your system goals.
Bright Agrotech
March 27, 2015 at 10:04 am
I’m loving your videos. I’m going to start doing a system shortly, so I’m
studying up. In your Top 10 Mistakes Made By Aquaponic Growers, I laughed
about the zucchini thing. We got a lot of zucchinis from our CSA
membership. More than we wanted to cook or put in salads. So we marinated
slices and put them in the dehydrator and made delicious zucchini chips.
After starting that, we had no problem eating as many zucchini as could be
thrown at us. Thanks for the great ebook. 🙂
Raederle Phoenix
March 27, 2015 at 10:07 am
It can! We accomplish most of our aeration with circulation, but airstones
can help raise DO, especially in systems with low circulation rates
Bright Agrotech
March 27, 2015 at 10:47 am
Aquaponics systems with reasonable stocking densities & good gas exchange
already, don’t really need additional help raising DO levels. We’ve used
them in the past. They’re pretty neat and they’re pretty cheap too. So in
some scenarios they can save you money on an air pump.
Bright Agrotech
March 27, 2015 at 11:36 am
Can you put a overview in the description? I still don’t get DO, but this
did help.
Claire Gilmer
March 27, 2015 at 12:28 pm
You are helping me so much . thank you.
CoffeeAndAViewdotcom
March 27, 2015 at 1:06 pm
Very basic question. With a water pump, does the pump itself have anything
to do with increasing the DO? I thought that it was on the way back down to
the fish it disturbs the surface of the water (and increasing surface area
disturbed would increase DO). If I were to maximize DO, what is the best
way? I understand if the surface is disturbed too much it can stress the
fish, but i want the most DO possible in a unit that must be economically
viable. Great video
naejimba
March 27, 2015 at 1:10 pm
Plants need fairly high oxygen levels as well. Saturation is ideal. The
roots need to remain aerobic. If they’re anaerobic, they’ll die very
quickly (for most plants). If you’re cycling your water fast enough and
your fish are still alive, you’ll be fine!
Bright Agrotech
March 27, 2015 at 1:14 pm
When the water get warmer, there is less dissolved oxygen? Right?
Claire Gilmer
March 27, 2015 at 1:24 pm
Correct. Warmer water can hold less dissolved oxygen than cooler water.
Bright Agrotech
March 27, 2015 at 2:18 pm
what is the main reason for the dacy of oxygen in a higher temperature
regime? is this a diffusion process or is the oxygen used by the bacteria
which becomes more active at higher temperatures?
MrMegaelf
March 27, 2015 at 2:53 pm
is the oxygen solubility in water related to the density of water at a
given temperature?
MrMegaelf
March 27, 2015 at 3:43 pm
Water is more dense at higher pressure, but it doesn’t really matter in
these applications because it will always be fairly shallow. What really
matters is the water’s exposure to atmospheric oxygen. Water density can
play a role, but most often has to do with solutes more than pressure since
the oxygen has to diffuse from the atmosphere.
Bright Agrotech
March 27, 2015 at 4:39 pm
Oxygen solubility decreases with increasing temperature. Also, bacteria and
marine organisms often consume more oxygen with increasing temperature.
Because the solubility is lower, diffusion rates are, of course, lower as
well.
Bright Agrotech
March 27, 2015 at 4:43 pm
A DO meter is probably your best bet, unless you’re feeling overly
ambitious and want to calculate it backwards. If you REALLY want to know
how to do that, you can shoot us an email. Next time you’re in Laramie, let
us know! You’re more than welcome to come by for a tour.
Bright Agrotech
March 27, 2015 at 5:16 pm
Thank you very much for the very useful video ! Great job!
Mims Raj
March 27, 2015 at 5:54 pm