/r/aquaponics

Photograph via snooOG

The symbiotic cultivation of plants and aquatic animals in a recirculating environment.

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The symbiotic cultivation of plants and aquatic animals in a recirculating environment.

Below are some relevant links and subreddits - consider them as well when you are posting or looking for additional information.

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/r/aquaponics

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0 Comments
2024/04/13
19:53 UTC

1

Small Commercial aquaponics system

Hey everyone,

I want to start a small commercial aquaponics system that I can grow into something big. The only issue is that I have absolutely no idea where to start or even who to ask or anything. I’m super passionate about starting one and think it’s an amazing business. I’ll need all the help I can get. Yes I will need a loan or something for money cause I don’t have the funds to start one.
Any and all help is greatly appreciated!!

0 Comments
2024/04/13
01:12 UTC

11

What made you people get into aquaponics?

Personally, I just love watching things grow and multiply under my care. Also farming and producing things is kinda in my bloodline.

21 Comments
2024/04/12
11:29 UTC

10

An example of a tomato going from healthy to nitrogen starved.

17 Comments
2024/04/11
14:51 UTC

2

best plant for salt water aquaponics

i have a fish pond where i use half salt water and half fresh water to grow tilapias. i wanted to convert it to an aquaponic system but i am clueless on what to plant. i did some research and found that most plants die if they intake salt water. what would be the best plant to grow for the water that i use?

3 Comments
2024/04/11
04:11 UTC

2

Alternatives to K2 Media in MBBR

K2 media is pretty expensive and I don't see any advertised as "food grade". Are there any alternatives to K2 that would solve these issues? My first thought is crushed lava rock. Probably would be too heavy to move though after saturation. You can see where I am going though. Any thoughts?

3 Comments
2024/04/10
20:42 UTC

16

Should I cut?

I thought when I bought these “dwarf” cherry tomato seeds, they would be short enough for this system. Will it kill them to cut the top branches? Planting outside is not an option right now.

12 Comments
2024/04/10
14:55 UTC

4

Molybdenum (Mo) and Nitrate (NO3)

5 Comments
2024/04/10
11:05 UTC

1

Ideas for Our Earth Month Aquaponics Display?

Hi all,

We're setting up an aquaponics display for our university's Earth Month and need your advice. What small items can we display (like a mini pump) to attract students? Also, any tips for a poster that catches the eye?

Thanks for your suggestions!

3 Comments
2024/04/10
01:19 UTC

4

Engaging Aquaponics Display for University's Earth Month Celebration

Hi all,

We're setting up an aquaponics display for our university's Earth Month and need your advice. What small items can we display (like a mini pump) to attract students? Also, any tips for a poster that catches the eye?

Thanks for your suggestions!

4 Comments
2024/04/10
01:18 UTC

4

Liner for grow beds follow-up

I wanted to follow-up on this post that helped me out, but has since been archived. My use case is actually for an 8 x 12 cedar garden bed that I am really putting a lot of work into so I wanted to ensure its longevity. I spent a LOT of time trying to find reputable companies that make virgin / non-recycled HDPE or LDPE. I looked at a lot of pond liners, but the ones that advertised being virgin HDPE seemed mostly to be random companies based out of China and do not advertise their products as food safe or potable water safe.

Anyways the original post helped point me in the right direction and I started looking into NSF certifications and settled on going with a material that at least had an NSF-61 certification (and you want to make sure they are certified with the latest NSF-61 certifications as the rules were updated for 2021). That NSF-61 certification means it's been declared safe for potable water. You can verify vendors and products on the official nsf.org site here. This brought me back to a few companies that I had found in my previous search - those companies that you have to request a quote from. I figured it was a long shot and I was near ready to give up, but I put out a few requests and emails.

https://www.btlliners.com got back to me nearly instantly and I've ended up buying 120 sq feet of their BTL-12 Mil Blk/White String Reinforced ArmorCover for ~$95 plus shipping which was $39 via UPS. It's certainly not cheap, but being able to order just the right amount and order to specification will save me a lot of extra work and prevent a lot of unnecessary plastic waste. Most fish-safe pond liners I could find which advertised as using virgin materials, but that still had no certifications were $300+ so I'm pretty happy with the price. While this material is only 12 mm thick as opposed to some pond liners which are 20 mm thick, supposedly the weaving of the material makes it very strong and resistant to punctures. This is important because otherwise you're not creating a water barrier - you're creating a water trap. I appreciated that the person I spoke with, Nolan, did not appear to try to sell me things I did not need. He steered me away from, what I'm assuming was, the more expensive 16 mm option. Please ping me if you're interested and I've not yet updated this post after I've received and installed the material (and happy to provide updates on how it's going over time).

As I'm planning to secure the material with stainless steel staples and have other supporting structures which will be a bit tricky (supportive cedar beams that go across the bed, for instance) I did also inquire with BTL about NSF-61 certified adhesives they may have. They do have a tape, but it's $120. Nolan also steered me away from this suggesting they actually have a lot of folks that use this material for cedar beds and they just wrap it over the top / under the bottom of the bed then make a waterproof seal on the outside . That wasn't going to work for me due to the bed design and, in retrospect, it's probably better that I went with an alternative approach considering my specific circumstances (although perhaps I'll find myself dishing out the money at some future point if I end up needing to patch the material).

Given in my case I would have to secure the liner just above the soil line, but could not wrap it over the edge I really need a water-tight seal otherwise water would definitely get in there. For this I've landed on Dowsil 732 Silicone Sealant which also has the NSF-61 certification as well as NSF-51 food safe certification. I plan to apply a layer of this both above and below the staple line and then use it to seal places where there are joints or I have to otherwise cut the material. I will report back on how well his adheres to the plastic and the wood. Fingers crossed..

It's worth also noting that I found a popular brand known as Agfabric sells an HDPE pond liner. They now go under the brand name "Gardenport" and I reached out to them about their pond liner. They claim it's 100% non-recycled virgin material and is safe to use in the garden. You can get a 13' x 20' liner from Home Depot or Lowes for $80, but I'm personally going to sleep more soundly with the NSF certification.

Anyways hopefully this helps future travelers. If there are any obvious issues / concerns with my approach here constructive criticism is always welcome. Also please share other useful products or resources and I will try to maintain a curated list at the top. This is not intended to be an advertisement for a single company or even an endorsement of specific products especially considering I am not intimately familiar with NSF standards and the certification process and I do not claim to have any expertise in plastics or construction. It's entirely possible I have some very bad ideas here, but hopefully the community will point those out if so!

6 Comments
2024/04/09
15:23 UTC

5

Can anyone recommend me hydrophonics or aquaponics?

Right now I have a smaller colony of about 30 red cherry shrimpies:). And I've been looking to make it into an aquaponics system. But i doubt that i have time to make it on my own. So I'm looking for a good hydrophonic part-extension. Or if i need to, i would be even willing to buy a new aquarium to make the plant part work.

I've been looking around but I'm not really sure as to what would be the best if i want to grow tomatoes and basil.

Could anyone recommend me one please? Or would that be counted as an "ad" on this subbreddit technically?

Any help would be appreciated, thanks.

27 Comments
2024/04/09
10:35 UTC

7

my planted Thai basil grew so different than the original

3 Comments
2024/04/07
19:44 UTC

5

What’s deficient?

Can anyone tell why the tips are dying/curling? Lettuce plants. Maybe about 3 weeks old. 2 shubunkins, one is a year old and the other is 6 months old. Not a huge bioload yet.

Having some fun with my aquarium. Would love a full scale aquaponics farm and plan on having one in the next few years but for now, my little setup it is.

4 Comments
2024/04/06
23:55 UTC

3

Aquaponics adapted to pvc drip system?

We have a small but effective mini aquaponics system that we can basically grow any leafy greens in.

I'm wondering how tricky it would be to attach a pvc piping system like a hydro one and plant some more? Would it cause too much stress?

0 Comments
2024/04/06
21:55 UTC

5

Methane harvesting from waste gases of aquaponics sump tanks?

Does anyone have any knowledge of this? I can't find much by researching on the Internet

Edit: similar to this

https://www.youtube.com/watch?v=3AZv6MjZylo

6 Comments
2024/04/05
19:20 UTC

25

This was yesterday's harvest to grab your attention. The problem is that it's the first harvest in almost two weeks from my media bed, when it should be every few days. I recently lost my nearly mature tilapia and have a question (see comments).

10 Comments
2024/04/05
16:54 UTC

7

What plants can help change the water in aquaculture tanks?

Okay so my highschool agriculture department has aquaculture tanks. My teacher wants me to do some research about what plants we could use to help regulate the ph and the water hardness. I spent an hour googling stuff I thought would help but I can only find plants that can live in low ph and hard water.

So I thought you guys might be able to help?

Any Ideas?

6 Comments
2024/04/05
16:46 UTC

1

Help needed with 1 project

Hello aquaponicists,

first post here and first indoor project. I recently bought a 30L aquarium and would now like to put it into operation.

I have come up with a plan and would like some feedback.

The water runs from the aquarium into 2 individual pots (one with mint, the other with chives) and from there into a larger bed, in which 3 herbs are to be placed. I wanted to plant basil, a head of lettuce and an xx (I don't know the last one yet...) in the larger bed.

I want to grow 2 smaller aquatic plants in the aquarium itself and hang an ivy plant in the aquarium.

The aquarium should contain 15 danios (e.g. https://en.wikipedia.org/wiki/Boraras_brigittae), 10 shrimps (e.g. 10 dwarf shrimps) and 3 snails.

  1. is such a setup even possible in terms of the fish/plant ratio?

I'm afraid there are too many plants and too few fish...

  1. should I replace the lettuce? If so, with what?

(This is just the best I could come up with anyway)

Many thanks in advance :)

2 Comments
2024/04/05
12:22 UTC

3

Texas tilapia

I’m confused, some sources say a permit is required for any tilapia except Mozambique. Others say Nile can be stocked in private water. Are there any Texans that can chime in and let me know if I can use Nile tilapia? Thanks y’all.

5 Comments
2024/04/05
03:22 UTC

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