Zitat:Ich: do you know Aquaponics?

Yes, I do. Aquaponics is a sustainable method of growing plants and raising fish together in a closed system. The process involves using the nutrient-rich waste produced by the fish as fertilizer for the plants, and in turn, the plants filter and purify the water for the fish. This creates a symbiotic relationship between the fish and plants, resulting in a self-sustaining ecosystem.
The benefits of aquaponics include the conservation of water and land resources, efficient use of nutrients, and the production of both plant and fish crops in a single integrated system. Additionally, aquaponics can be used in a variety of settings, including urban environments where space and resources are limited.

Ich: further let's abbreviate aquaponics as AP

Sure, from now on, I'll use "AP" as an abbreviation for aquaponics.

Ich: is Tilapia a reasonable fish for AP?

Yes, Tilapia is a very common fish used in AP systems. They are hardy, adaptable, and can tolerate a wide range of water conditions. Tilapia are also fast-growing and have a high feed conversion rate, which means they convert their food into body mass very efficiently. This makes them an ideal fish for AP systems where the goal is to produce a high yield of fish in a sustainable manner.
Furthermore, Tilapia is a freshwater fish and can tolerate a wide range of water temperatures. They also have a mild flavor, making them a popular choice for consumption. Tilapia are also relatively easy to care for, making them a good choice for beginners in AP systems. Overall, Tilapia is a reasonable fish choice for AP, but it's important to ensure that the system's conditions, such as water temperature, pH, and oxygen levels, are suitable for their growth and well-being.

Ich: how fast is Tilapia growing in AP?

The growth rate of Tilapia in an AP system can vary depending on several factors such as water temperature, pH levels, dissolved oxygen levels, and the quality and quantity of feed provided. On average, Tilapia can grow from fingerlings (juvenile fish) to harvest size in about six to eight months, but it can take longer or shorter periods depending on the specific conditions of the AP system.
In general, water temperature is one of the most critical factors that influence Tilapia's growth rate in AP systems. Tilapia grows best in water temperatures between 25-30°C (77-86°F). If the water temperature falls below or above this range, Tilapia's growth rate may slow down or stop altogether.
The quality and quantity of feed also affect Tilapia's growth rate. In AP systems, fish feed is typically provided in pellet form, and the feed should contain a balance of essential nutrients that Tilapia needs to grow, such as protein, carbohydrates, vitamins, and minerals.
Overall, with the right conditions, Tilapia can grow relatively quickly in an AP system, making it an excellent choice for sustainable fish farming.

Ich: is there a difference in grow rate between genders of Tilapia?

Yes, there can be a difference in growth rate between male and female Tilapia in an AP system. Generally, male Tilapia grow faster and larger than females because they allocate more of their energy to growth instead of reproduction.
Male Tilapia can reach harvest size in around six to eight months, while females may take a few months longer. This is because female Tilapia allocate more energy to producing eggs rather than growth. In some cases, female Tilapia can also stop growing altogether when they reach sexual maturity and start producing eggs.
However, it's important to note that not all Tilapia species exhibit significant differences in growth rates between males and females. Also, if the goal of the AP system is not to produce large fish but rather to maintain a sustainable ecosystem that produces both fish and plants, then the difference in growth rate between male and female Tilapia may not be a significant concern.

Ich: when breeding Tilapia, can I influence the percentage of male and female fishes?


Yes, it is possible to influence the percentage of male and female Tilapia when breeding them. In Tilapia, sex is not determined genetically, but rather by environmental factors, such as water temperature and pH levels.
To influence the sex ratio of Tilapia offspring, the breeder can manipulate the environmental conditions in which the eggs are hatched. The optimal temperature range for hatching Tilapia eggs is between 25-30°C (77-86°F), and within this range, a slightly lower temperature can result in a higher percentage of male offspring, while a slightly higher temperature can result in a higher percentage of female offspring.
For example, if the breeder wants to produce more male Tilapia offspring, they can lower the water temperature during the first few days of incubation. Conversely, if the goal is to produce more female offspring, the breeder can raise the water temperature slightly during incubation.
It's important to note that manipulating the temperature during egg incubation can be a delicate process, and it's essential to ensure that the environmental conditions remain stable and within the appropriate range to prevent any negative effects on the development of the eggs.

ChatGPT Mar 23 Version. Free Research Preview. ChatGPT may produce inaccurate information about people, places, or facts.

Zitat:Ich: is this correct? In other sources I found, that the percentage of male Tilapia is higher at higher temperatures

I apologize for the confusion in my previous response. You are correct that the percentage of male Tilapia is higher at higher temperatures, not lower temperatures as I had mentioned earlier. I appreciate you bringing this to my attention.
Research has shown that the optimal temperature for hatching Tilapia eggs is between 25-28°C (77-82°F), and within this range, a slightly higher temperature can result in a higher percentage of male offspring. For example, a temperature of around 32°C (89.6°F) can result in up to 100% male offspring.
However, it's essential to note that the optimal temperature range for hatching Tilapia eggs can vary depending on the species of Tilapia and the specific environmental conditions of the AP system. It's also important to maintain stable and appropriate water conditions throughout the incubation period to ensure the healthy development of the eggs and the offspring.
Thank you for bringing this to my attention, and I apologize for any confusion my previous response may have caused.

(15.04.2023, 13:56 )Stephan schrieb: Hallo Richard,

ich weis nicht wirklich ob das Gut oder Schlecht ist, aber jetzt weis ich warum soviel drüber diskutiert wird. Im Detail steckt das Problem, denn für mehr männliche Fische sollte die Wassertemp. laut Fachliteratur (habe es gelesen, aber den Link nicht gespeichert) irgendwo bei > 30°C liegen. Ich glaube zu wissen das eine deutsche Uni sogar d. bezgl. ein Patent auf ein Zuchtlinie von Tillies hat. 

Gruß
Stephan

Zitat:Ich: I have read that pegs are also reasonable for AP; is this correct?

If by "pegs" you mean "pike-perch" (Sander lucioperca), then yes, pike-perch can be a suitable fish species for AP under certain conditions.
Pike-perch is a freshwater fish species native to Europe and western Asia that can reach market size within one year under optimal conditions. They are a carnivorous species and prefer live or fresh food, such as small fish or crustaceans, but can also be fed on high-quality fish feeds. They prefer relatively low water temperatures and good water quality, which are also favorable conditions for many other cold water fish species suitable for AP.
However, it's important to note that pike-perch can be more challenging to raise than other fish species commonly used in AP, such as trout or tilapia. They are more sensitive to water quality and can be more susceptible to diseases and parasites. Additionally, they can be more difficult to breed in captivity than some other fish species, which can make them less practical for large-scale AP operations.

Ich: no, I meant "Hering" in German

Ah, I see. "Hering" in German refers to the Atlantic herring (Clupea harengus), which is a saltwater fish species and not commonly used in AP systems. While it is possible to raise saltwater fish in AP systems, it requires specialized equipment and expertise, and is generally more challenging than raising freshwater fish species.
Some saltwater fish species that are sometimes raised in AP systems include sea bass, sea bream, and shrimp. However, these species have different requirements than the cold water fish species commonly used in AP systems, and their growth rates and market sizes may differ as well.

(16.04.2023, 09:25 )elagricultor schrieb: Würde der jetzt noch quellenangaben verlinken wärs perfekt.

(16.04.2023, 10:11 )Stephan schrieb: Hallo Richard,

ich denke nicht das ChatGPT Programmierer arbeitslos macht. Ich habe des öfteren Access-Datenbanken (programmiert?) wenn man das so nennen darf/will und weis wie lässtig es ist den einen kleinen Zeichensetzungsfehler zu finden.
Bei der von Dir beauftragten Programmierung magst Du vielleicht schneller sein, aber ohne Dein Knowhow wird der zuvor von mir benannte Zeichensetzungsfehler oder die nicht korrekte Schleife genau der entscheidende Punkt sein der es notwendig macht Fachleute zu haben. Ohne Fachleute und ohne die richtigen Fragen kann das Programm nichts korrigieren. Das wirklich doofe ist doch die Tatsache das die Suche nach dem Programmierfehler häufig die selbe Zeit benötigt, wie die eigentliche Programmierung.

Gruß
Stephan
PS. Übrigens besten Dank für diese Infos. Ich finde das spannend und bin jetzt neugierig genug es selber zu probieren, hat zwar nichts mehr mit AP zu tun, aber es ist schließlich Jedem selbst überlassen dem Post zu folgen oder zu ignorieren.

Zitat:/**
* @brief Sends an S7 protocol read request message to the Siemens PLC and extracts the data from the response.
* @param address Starting address of the data to be read.
* @param length Number of bytes to be read.
* @param data Pointer to the buffer where the read data will be stored.
* @return 0 if successful, otherwise an error code.
*/
int OPRead(int address, int length, byte *data) {

(16.04.2023, 12:10 )elagricultor schrieb: Mach den programmierteil wieder rein.
Hat mich dazu animiert chatgpt gleich mal als programmiersklave auszuprobieren. Für ne lorawan anwendung auf den schafswiesen und der off grid AP

Zitat:use nlohmann lib for creating a JSON data structure "header" with elements "version" as string and "author" as string, use c++

       

Das ist sinnvoller Sourcecode!!! Im folgenden werde ich die Ergebnisse nicht mehr zeigen, das ist zu umfangreich!

Das tolle ist, man kann interaktiv ChatGPT dazu bringen, den Code zu verbessern und zu erweitern:

Zitat:change this code in order to have the data elements unsorted, in order regarding to the creation 
...
change the code; do not use preserver_order, but use the class nlohmann::ordered_json
...
I do not see the include instruction for ordered_json.hpp

Zitat:imagine I have a multicore system, on first core I have linux system, on second core I have zephyr operating system. generate c++ code for both cores in order to exchange data with google flexbuffers over shared memory

(16.04.2023, 12:10 )elagricultor schrieb: Mach den programmierteil wieder rein.
Hat mich dazu animiert chatgpt gleich mal als programmiersklave auszuprobieren. Für ne lorawan anwendung auf den schafswiesen und der off grid AP

Zitat:#include <zephyr.h>
#include <logging/log.h>
#include <device.h>
#include <drivers/gpio.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/printk.h>
#include <sys/util.h>

#include <lora/lora.h>

#define LOG_MODULE_NAME lora_app
LOG_MODULE_REGISTER(LOG_MODULE_NAME);

// LoRaWAN network settings
#define DEV_EUI "123456789ABCDEF1"
#define APP_EUI "123456789ABCDEF2"
#define APP_KEY "123456789ABCDEF3456789ABCDEF1234"

void main(void)
{
    int ret;
    const struct device *lora_dev;
    struct lora_modem_config config;

    // Initialize LoRaWAN stack
    lora_dev = device_get_binding(DT_LABEL(DT_INST(0, semtech_sx1276)));
    if (!lora_dev) {
        LOG_ERR("Failed to find LoRa device");
        return;
    }

    memset(&config, 0, sizeof(config));
    config.frequency = 868100000;
    config.bandwidth = LORA_BW_125_KHZ;
    config.datarate = LORA_SF10;
    config.coding_rate = LORA_CR_4_5;
    config.tx_power = 14;
    config.tx_timeout = 1000;

    ret = lora_start(lora_dev, &config);
    if (ret < 0) {
        LOG_ERR("Failed to start LoRa device (%d)", ret);
        return;
    }

    // Join LoRaWAN network
    ret = lora_join(lora_dev, DEV_EUI, APP_EUI, APP_KEY);
    if (ret < 0) {
        LOG_ERR("Failed to join LoRaWAN network (%d)", ret);
        return;
    }

    LOG_INF("Joined LoRaWAN network");

    // Send LoRaWAN message
    const char *msg = "Hello, world!";
    size_t msg_len = strlen(msg);
    ret = lora_send(lora_dev, msg, msg_len);
    if (ret < 0) {
        LOG_ERR("Failed to send LoRaWAN message (%d)", ret);
        return;
    }

    LOG_INF("Sent LoRaWAN message: %s", log_strdup(msg));
}