Aquafarming for the mentally elevated

sankakugatame

Active Member
It's interesting for a couple reasons to look at the American-heritage dictionary definition for the term, “Aquaculture.”



  1. The science, art, and business of cultivating marine or freshwater food fish or shellfish, such as oysters, clams, salmon, and trout, under controlled conditions
  2. Hydroponics.


One being that it is not always for business. Two being that hydroponics is stuck in there. Three being that hydroponics is stuck in there without an explanation of how it's related. I'm taking it a step further and making that connection with the hope that it betters someones life.


Being an aquarist. I'm very interested and concerned with the state of the "nitrogen cycle" within my fish tank. If you aren't familiar with this terminology basically the biggest enemy an aquarist has is the accumulated level of NH3 and NH4 more commonly referred to as ammonia and ammonium respectively. Ammonia accumulates when a fish eats and then excretes waste and in such a small body of water it can reach toxic levels relatively quickly. Depending on how much the fish are fed and without intervention by a third party toxic levels can conceivably be reached in a few days.

An aquarist really has two options. Either they can change the water on a frequent basis or find something to remove the NH3/NH4. We simply need to look at the fish's natural habitat for a solution. In the wild there is a certain kind of bacteria that views NH3/NH4 as we view [insert favorite food here]. They devour this tasty treat and you're left with nitrites or NO2. For illustrative purposes we'll call the bacteria's best buddy's vegetarians because they don't eat meat or in this case NH3/NH4. They actually prefer the NO2. After watching Happy Face for the 73rd time they scarf down a bag of NO2 and happily leave behind NO3 or Nitrates. Now that we get to this point we're faced with one last problem. What to do with the NO3.


The aquarist once again has two options. Either change the water or find something to get rid of the Nitrates. Luckily of all the N's nitrates can exist in the largest concentration with out adverse effects on the fish. Most aquarists will take advantage of this and use the couple weeks it takes for the NO3 levels to build up to enjoy life and eventually change the water removing the excess NO3 and completing the nitrogen cycle as far as the tank is concerned.


You may be wondering the “au naturel” method for the removal of nitrates. Well that is why I decided to post here. Nitrates are to plants what White Castle is to Harold and Kumar. That is one of the advantages of having aquatic plants in your aquarium. They remove some of the nitrates from the water keeping the total concentration at a lower level. For myself I keep only a few plants in the tank because as anyone reading this knows taking care of plants requires light which in a controlled environment also requires electricity which isn't cheap.


Most would gladly supply the light to a plant that provided a little more value. Just because said plant is terrestrial doesn't mean it can't benefit from the goings on in the fish tank. Especially if a system was setup to transfer the nutrient rich water to the plant. Specifically a system that transferred the solution directly to the plant's exposed roots. You know, aeroponics?


So think of it this way. When you make a nutrient solution with a popular hydroponic fertilizer for an aeroponic setup you are simply skipping all the steps I talked about previously and starting with the end product of the nitrogen cycle. When you turn the lights on you are compensating for the lack of light in a closed system. When you add water you are compensating for the lack of rain in a closed system.


For legal reasons it makes sense to grow certain plants in closed environments. We have to pay for the energy required to produce the electricity that produces the needed light unless of course we have some other way of capturing the sun's energy like solar panels which aren't always practical. We have easy access to water which we also pay for but for the most part take for granted which leaves us just needing to provide food for our beloveds. Here's the issue though. When you buy fertilizers you aren't just paying for the fertilizer. You are paying for salaries, marketing, packaging, distribution, and if you buy the good stuff you are probably paying shipping as well. There is a cheaper alternative.


Consider the nitrifying bactera I describe as the guy on the side of the road that “will work for food.” They're not lying either. If you provide them a place to live and feed them regularly they will give you X fertilizer in return. I know this because I have to change the water in my fish tank every week to keep the nitrate concentration below 20ppm. This means it would be higher if my plants weren't enjoying some of it and also if the bacteria had more food to eat. The limiting factors being that the fish can't tolerate any higher concentrations of ammonia and the plants can't eat fast enough to control the levels of nitrate. If I didn't intervene the nitrates would eventually kill the fish and in combination with light would promote an algae bloom which all aquaculturists understand causes serious problems for your target species.


What we have now is a self contained 100% organic Aquafarm capable of satisfying the non-commercial needs of those looking for increased mental awareness. We have eliminating many of the ties to our mass produced capitalistic society. A society that for better or worse occupies a majority of our life on this planet. A society which also drove us here to seek this oasis of naturalness in the first place.


Enjoy. bongsmilie
 
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growman 5000

Guest
what about other nutes needing to be added to the water?

wouldnt those kill the fish?

Im no expert on nitrates, but i would assume the plant needs more than just that to survive. If this is the case, then i would recomend having an RO machine, and the ro go straight to the aquarium. Then when a person wants to top off their plant res, the water from the aquarium is used... but the plant res will also contain other things like cal-mag, and maybe small levels of nutrient lines.

Maybe im in left field, but this is the only way i see it working. My other advice would be to find a fish that can tollerate higher nitrogen levels, maybe a catfish or something? Just a shot in the dark. And my last question for you is, what is 20ppm of nitrogen going to do for a plant when we are feeding it upwards of 1500ppm of nutrients?

Im trying to make sense of your idea here.
 

sankakugatame

Active Member
what about other nutes needing to be added to the water?

wouldnt those kill the fish?

Im no expert on nitrates, but i would assume the plant needs more than just that to survive. If this is the case, then i would recomend having an RO machine, and the ro go straight to the aquarium. Then when a person wants to top off their plant res, the water from the aquarium is used... but the plant res will also contain other things like cal-mag, and maybe small levels of nutrient lines.

Maybe im in left field, but this is the only way i see it working. My other advice would be to find a fish that can tollerate higher nitrogen levels, maybe a catfish or something? Just a shot in the dark. And my last question for you is, what is 20ppm of nitrogen going to do for a plant when we are feeding it upwards of 1500ppm of nutrients?

Im trying to make sense of your idea here.
I think we disagree because our expected outcomes are a little different. My methods were created to satisfy my own personal needs. That is; to create a personal sanctuary, to enjoy a hobby, to enjoy some home grown, and to just plain chill the fuck out. I started with a 50 gallon fish tank and then I realized that I was dumping 12.5 gallons of nutrient rich water down the drain each week. So I decided to put it to good use. No, it doesn't optimize growth but it does optimize costs and privacy. Remember this isn't a capitalistic endeavor just a way to put what I already have to good use. I just wanted to share it with others who might find it interesting.

To answer your questions:


I do add a cal-mag supplement which I forgot to mention. It helps keep a stable PH as well as provide nutes for the plants. Reason being is a stable PH is more important for reducing stress in plants and animals than the reading itself. I also keep fish which prefer a more neutral PH and therefore eliminates the need for me to adjust the PH at all.


You're right 20ppm NO3 is not a lot but keep in mind this is just the ceiling I keep for the safety of the fish. This isn't taking into consideration what the plants are actually using. Either the plants eat it or I flush it down the drain. I guess an experiment is needed to see exactly how much the plants are actually removing but I always see an upward trend in NO3 levels despite what the plants consume.



I would advise against higher NO3 levels for two reasons. One, it is toxic to the fish and it is also a precursor to algae blooms. Just add light. Which is why more potent solutions need to be kept light tight in order to prevent photosynthesis. To provide a real life example take a guy with a lush green lawn and a pond in his back yard. If you take a look in the back yard you'll find a pond that is equally lush and green due to the run off from the lawn treatment. That means there was enough food to feed his grass and still enough left over to feed all the algae. So the grass did benefit but obviously more fertilizer was used than the grass could handle.
 
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growman 5000

Guest
yeah, im not saying dont use the fish water for plants... but im saying if i did it, i would have 2 seperate res's and every time the fish water gets too high in ppm, i would use that to top off my plant res, and refill the plant water with RO water each time. Good ideas man
 
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growman 5000

Guest
is there a way to get just the dirtiest water out... and is the dirtiest water (poop and scum) good for plants?
 

sankakugatame

Active Member
is there a way to get just the dirtiest water out... and is the dirtiest water (poop and scum) good for plants?
Technically the water really isn't "dirty" as far as a plant is concerned. Since animal waste is both the start and end of the nitrogen cycle it is exactly the stuff plants are looking for and all are consumed in a natural diet. Animal droppings are a common ingredient in organic fertilizers.

In common aquariums Nitrates are considered "dirty" since they can be toxic to fish and also due to the threat of algal blooms. Basically the nitrates are removed by human intervention taking the job plants usually own. That's why I'm all about bringing plants into the mix.
 
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