PPM and watering

PPM is just a concentration measurement. ug/L is not the same as elemental ppm. Sometimes these things get used without delineating the difference. One is just based on mass, but the other is about molecules or atoms per liter, which is how they get used.. they aren't used per gram they are used per atom/molecule. They all have different densities. One thing to understand is that an EC probe measures conductivity, not concentration. It only correlates. Depending on the manufacturer, it will use one of several conversion factors, which tells you all you need to know about it's accuracy. A different pen might give you a drastically different number. This is okay relative to 1 garden. If you change products the expected readings may possibly shift a bit. I don't know how volatile that is based on the options for fertilizer ingredients. Mulder's chart - summarizes relationship between the nutrient elements. The ratio of nutrients can impact how much of each you need. Your local temp/rh and atmospheric co2 matter too.. so, what you need can vary quite a bit from others. when looking at elemental ppm, 600-700ppm is a good spot to start for a soilless/hydro context. Again, your EC conversion of 870ppm is not the same animal. in soil, it's all the same cause and effect as far as the goal of nutrient concentration resulting around the roots, but you supplement what the soil provides.. you only add various parts that are lacking or have been exhausted over time. This takes familiarity with the soil product used - any any amendments you make. Rate of use Vs rate of root intake.. if you provide too high of concentration relative to root intake, you run into a toxicity. and vice versa, a deficiency. Observe and adjust. Overall concentration won't help much diagnosing issues or making adjustments to your fertilizer composition (i.e. ratios of nutes provided).

https://floraflex.com/EU/blog/post/understanding-ec-and-ppm-in-cannabis-growing-a-comprehensive-guide https://www.royalqueenseeds.com/blog-cannabis-water-quality-part-2-ppm-ec-n298 Just google it. "PPM/EC and Cannabis" Its not to hard. but if the plants are fine then prob does not matter if you have a gap in your understanding. the rest is there and supporting it.

Hey bro, I’m running Biobizz organics too and honestly – PPM isn’t the main thing I focus on in living soil. The key is keeping the microbes happy and the soil food web alive. I boost it early on with worm humus for nitrogen, and keep everything active with molasses and effective microorganisms (EM) throughout the grow. As long as your pH is stable (around 6.2) and your girls look happy – you’re doing it right! With organics, it’s less about the numbers and more about the vibes in the soil 🌱😄 Keep it organic, keep it living! ONLYBUDS ✌️🍀

Hey bro, 870 PPM with Biobizz sounds totally fine, especially if your plants are happy and showing no signs of stress or burn. Biobizz is organic and not salt-heavy, so PPM tend to look a bit lower compared to synthetic lines. You’re in the zone. Some growers even go up to 1000–1100 in mid bloom with organics, depending on how much they're feeding. If everything else is dialed and sounds like it is, don't overthink it. PPM is just a tool — the real answer is always in the leaves and how the plant reacts. 👍 Trust your eyes more than the meter, but it’s great you’re doing both. Good luck with the rest of your grow bro 🤞 🍀 ❤️

With Biobizz organics, a PPM of around 870 isn’t bad at all especially if your plants look healthy. PPM mainly measures dissolved minerals, but organic nutrients like Biobizz don’t always show up fully on a PPM meter since many components need to be broken down by microbes first. So don’t stress too much about the number if your pH, VPD, and PPFD are dialed in and the plants are thriving, you're on the right track! Hope this helps!