The Components of a Recirculating Aquaculture System, RAS Fish Farming and Aquaponics

In this video, UC Davis Aquaculture explains what is Recirculating Aquaculture System? We also tour our RAS fish farming system that supports our vertical aquaponic greenhouse. We discuss the 4 components of a recirculating aquaculture system and introduce various common components used in a commercial aquaculture fish farm or on an aquaponic farm. The 4 components of a recirculating aquaculture fish farm include clarification, biofiltration, gas stripping and oxygenation. In this aquaculture video we break each component down and discuss the technology common in RAS. Our RAS is only designed to provide nutrients for our vertical aquaponic greenhouse. The system is a simple system that can easily be copied in backyard aquaponics applications, aquaponics for beginners or for STEM education in school systems. It is effective without all the frills. The goal of our system is to be low maintenance but still have excellent water quality for the care of our hybrid carp. We utilize a submersible pump which is maintained in our sump which is an IBC tote. Water is pumped to each of fish tank. Water gravity flows up and out of the dual standpipe to our first clarification step which is a round tank that we have adopted as a swirl filter. From the swirl filter water will flow into a series of IBC totes. the first IBC tote is a dual purpose are (clarification and biofiltration). We are using matala pads as roughing filters. From the secondary clarifier water will enter the moving bed bioreactor (MBBR). Here we are using k1 media and mixing the system well using a regenerative blower which is a powerful air pump. After this step, water will flow back into our sump.
Here is the link to the foam fractionator article for use in freshwater RAS: www.sciencedir...
#RAS, #aquaculture, #aquaponics, #fishfarming, #ucdavis, #ibc, #biofiltration, #swirl, #clarification, #fish, #farming
aquaculture.ucdavis.edu

[@gaedikus]

This is one of the most informative "no nonsense" videos on the topic I've seen --without a doubt.

[@ThisIsAquaculture]

Thank you for that comment. It took me quite sometime to put that transcript together which is likely why compared to if I had presented without it.

[@Wontskate]

Currently taking an aquaculture course at UC Davis, this was a very interesting video

[@Aurius-r4l]

My left ear LOVED this video!

[@ThisIsAquaculture]

I wish your right ear liked it too.

[@mcmastertube]

These videos are like a compressed master class.

[@ThisIsAquaculture]

Thank you for the compliment! Did you see my follow up video on the system?

[@falahdizar]

great explanation! a huge help in clarifying RAS system

[@ThisIsAquaculture]

I have an update coming out soon!!!

[@OmniscientPotato]

Thank you for creating this content. I am working on building a prototype system currently and your content is helpful.

[@ThisIsAquaculture]

Glad it was helpful! I should do a follow up video and discuss how the system has functioned since we put it together and some of the small tweak and management actions we’ve made. It’s still going well.

[@OmniscientPotato]

@@ThisIsAquaculture That would be awesome.

[@johnnyzandro7480]

the explanation is very good and undestandable, despite presence of some technical words. my only request is to remove or lessen the background music next time. thanks.

[@ThisIsAquaculture]

New RAS video out. Music is a bit lower! 😁

[@connelldevera3787]

From the Philippines... Thanks a lot. very important information..

[@julierstjohn]

Outstanding content 📹

[@mattallen664]

Amazing information thank you

[@ThisIsAquaculture]

I hope you found it helpful. I should be publishing an update in a couple weeks. Editing as I text this.

[@ThisIsAquaculture]

New RAS video out!

[@jdwilsun]

Wow great info & compact!

[@ThisIsAquaculture]

Glad you think so! Thank you for watching.

[@SemiPolymath]

Great introductory video! I really appreciated the cost and time savings ideas your system showed, like whether to use pressure or gravity for water flow, uniseals or bulkhead fittings to seal pipes, and many other small but hugely helpful details. My only caution is that the picture of a paddlewheel aerator at timepoint 3:52, illustrating aeration, might have illustrated the opposite. As Claude Boyd warned, in ponds with heavy algae growth, DO can become supersaturated in the afternoon of long summer days, then paddlewheel agitation causes the supersaturated water to equilibrate with the air by off-gassing oxygen. Not all supersaturated gasses are bad!

[@ThisIsAquaculture]

Valid point about the aerator. This was filmed in the desert of California. What we find is that on cloudy days we really need those aerators moving. The water has a lot of silt in it as Colorado river water. I was just using that film as another example of aeration. This video was originally almost 20 minutes. There was a lot more about the flexibility of plumbing between tanks with uniseals, pumps, filters…it is already dense!

[@Steve-cn5up]

What an awesome video! Just had to drop a like and subscribe - your content is seriously helpful. I've been tinkering with Aquaponics on a small scale for quite some time. Always felt that the initial UVI models were a tad limited, particularly with their coupled nature and the use of Tilapia. Don't get me wrong, I'm a big fan of Tilapia, but from a commercial viewpoint, they aren't the top choice here in the U.S. In your slides, I think I spotted Sturgeon and a species of trout. You mentioned the fish were essentially playing second fiddle to the main show, just there to produce fertilizer. But say we flipped that script and put the spotlight on the fish - what are your thoughts on using Sturgeon and trout for that purpose? Really curious to hear your perspective.

[@ThisIsAquaculture]

You can always use any farmed fish. The reality is you need so little fish to grow vegetables so any fish farming operation could likely support many greenhouses. We used sturgeon for awhile but they just got too big for us and the temp in my facility gets so hot in the summer that I am always panicking so we moved to carp. Trout are fine too but the water quality in aquaponics, unless decoupled, isnt approrpiate and then you are likely needing to heat your water. Obviously that depends on your crops. An update to this video is coming out soon. Thank you for the kind words.

[@ThisIsAquaculture]

New RAS video out!!!

[@thomasmattson2389]

Outstanding video.

[@ThisIsAquaculture]

Thank you Thomas. This one took quite along time to make.

[@Bettaloveyou]

The oxigenation utube how can i get more information on it ?????

[@riyadamayreh7433]

Great video, music domonite the narrater

[@ThisIsAquaculture]

Glad you enjoyed it

[@cyrilledongmo7665]

bonjour Mr, comment faire pour acheter les K1 ou les bio filtres , nous sommes au Cameroun et voulons pratiquer le RAS OU LE recirculation aération système . pleanse Sir , what can l do to get K1 or biofilters arriving here in Cameroon - Africa

[@ThisIsAquaculture]

I don't know. I think a lot is purchased from China. Alibaba?

[@noriseddiki1461]

🥰🇩🇿

[@edmundegerega7785]

This background music is a disturbance. This is an instructional video that needs to be delivered in very clear audio. The music disturbance distorts the speech of the instructor.

[@jasvindersingj9633]

Please translate into hindi language it will help indian farmer

[@ThisIsAquaculture]

It already has closed captioning in Hindi!!!!

[@ThisIsAquaculture]

and Bangla and Telagu.