Non-humic substances in humus are organic compounds that are not classified as humic substances. These can include proteins, amino acids, sugars, and other organic molecules that are partially decomposed plant and animal material. Non-humic substances play a role in nutrient cycling and soil fertility, contributing to the overall organic matter content of the soil. **

Humic substances are not necessary for betta fish, but they can provide some benefits. Humic substances can help create a more natural environment for bettas by mimicking their natural habitat and providing a source of beneficial bacteria. They can also help to lower the pH of the water, which may be beneficial for bettas that prefer slightly acidic water. However, it's important to use humic substances in moderation and to monitor water parameters to ensure they do not negatively impact the overall water quality. **

Humic substances or similar substances can be introduced into the aquarium in several ways. One common method is to use commercially available products such as peat moss, which can be placed in a filter bag or directly into the aquarium to release humic substances over time. Another method is to use natural materials such as driftwood or leaves, which release humic substances as they break down in the water. Additionally, there are liquid additives specifically designed to introduce humic substances into the aquarium. It's important to monitor water parameters and the behavior of the aquarium inhabitants when introducing these substances to ensure they are not adversely affecting the ecosystem. **

It is difficult to determine if something is a fashion trend without more specific information about what is being referred to. Fashion trends can vary widely and can be influenced by a variety of factors such as popular culture, social media, and celebrity endorsements. Without more context, it is challenging to definitively say whether something is a fashion trend or not. **

No, circumcision is not a fashion trend. Circumcision is a cultural, religious, or medical practice that has been performed for thousands of years in various societies around the world. It is not a passing trend, but rather a deeply rooted tradition with significant historical and cultural significance for many communities. While there may be fluctuations in circumcision rates over time, it is not accurate to categorize it as a fashion trend. **

Yes, piercings are considered a fashion trend. Over the years, piercings have become a popular way for people to express their individuality and personal style. From ear piercings to nose, lip, and body piercings, they have become a common form of self-expression and a way to enhance one's appearance. Many people view piercings as a fashion statement and use them to accessorize and complement their overall look. **

One weird fashion trend is "double jeans," which involves wearing two pairs of jeans at the same time. Another strange trend is "clear knee mom jeans," which are jeans with clear plastic panels at the knees. Additionally, "naked pants" are a bizarre trend where the pants are designed to look like the wearer is not wearing any pants at all. These trends push the boundaries of traditional fashion and often spark debate and discussion within the fashion community. **

As an AI, I don't have personal preferences or the ability to follow fashion trends. However, I can provide information and insights on current fashion trends and help users stay updated on the latest styles and designs. Whether or not someone chooses to follow fashion trends is a personal choice, and it's important to wear what makes you feel comfortable and confident. **