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Leaf tip burn like that, when your feeding it hydroponically, Is 99% of the time going to be a nutrient issue. It could also be a ph issue, but its more likely your overfeeding it, causing a nutrient lock. Thats why your also seeing signs of deficiency, even though its over fed. It doesn't matter what line of nutes your using, all companys recommended ...


2

I am planning to make a simple DWC set up (for tomatoes) and was wondering if I could use a water soluble fertilizer (20-20-20 with Mg Fe Cu etc.) It depends what is in that "etc". If all 13 required elements are present, then you could probably use that fertilizer. However, if it isn't made for hydroponics, it probably won't have them, since in soil ...


2

You seem to be missing the point that you are trying to create a constant (slow) movement of a thin film of nutrient solution, not a pond. The plant roots should be touching the base of the trough, not sitting in a pool of water. Typical recommendations are a slope of about 1 in 40 (i.e. one inch drop in 40 inches length) and flow rates of about 1 liter per ...


2

Stormy, all cacti do not have shallow roots. It completely depends on the species and there are 1000s upon 1000s of species of cacti. I am a manager at a specialized cactus nursery and I can tell you that some cactus species have massive root systems or tap roots. Cacti grow on all sorts of different terrain such as mountains (i.e., Cereus peruvianus), and ...


2

The Rock wool used for insulation hardly absorbs any water and hence probably is not suitable for hydroponics. Also, the one purposed for hydroponics is PH neutralized and properly treated for contamination. However, there is a variety of choice of growing media in hydroponics. There is no stipulation of using any specific media in hydroponics. Most ...


1

According to the US National Institutes of Health (not politicized yet, thankfully), perlite dust is NOT hazardous. Here is a great source for more information - the relevant information is in the Abstract. That being said, I have some bronchial issues of my own, so I wear a simple dust mask when working with perlite and soilless mix - I just don't like ...


1

There is a big difference in general purpose NPK fertilizer and the one specially designed for Hydroponics. The N(Nitrogen) in NPK fertilizer mostly comes from Urea or Ammoniacal form. It is designed to decompose with time and release nitrite which is later converted to nitrate by bacteria. Thus it is more suitable for use in soil. Plants readily absorb ...


1

There are a number of factors to consider: first will the nutrient solution be exposed to light - if so there will be algae to deal with if the solution sits in the trough, second plant roots will need air and in this case the air is in the gap between the bottom of your pots and the water level in the trough. The trough solution level should be high enough ...


1

The problem is most likely a poorly sterilized environment. You created a situation where almost anything you planted would thrive. Unfortunately for you mold is much higher up on the evolutionary scale than the plants you wanted to grow are. In fact, in terms of evolution, mold is second to none. Therefore, I would suggest you thoroughly sterilize the ...


1

Nice idea. You'll have to be careful buying. Fleece: "the coat of wool covering a wool-bearing animal (such as a sheep)." There's a lot of "fiber fill" out there these days. Usually made from some water repelling strands. None that I've seen (wife makes pillows/quilts) will soak up water the way you want. Quilts used to come with wool fleece, when people ...


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By the end of the week do I need to add more nutrients if my EC reading is still around 2.4 ? ( The nutrients apparently should be added each week, but I think this may be excessive ) If your EC hasn't changed there is no reason to change the water or add nutrients. You're just wasting nutrients that the plants haven't had time to consume yet. Especially ...


1

Water with a low pH is also generally soft water, meaning it doesn't have any buffers to protect the water (and things living in it) from pH swings. Your Reverse osmosis filter is stripping away the minerals in your water, which softens the water and lowers the pH of the water and also removes all those buffers that help stabalize pH. You need to either stop ...


1

If you live in the USA, you could sell the produce as 'organic' in theory, provided the nutrients you supply to your plants are on the approved list as 'organic nutrients'. This area is not a clear one in the USA though, see here https://modernfarmer.com/2017/05/is-hydro-organic-farming-organic/ However, in most other countries of the world, no, ...


1

Of course Hydroponics growers do this all the time, growing plants in liquid medium, but they take special care to provide a suitable environment. First the liquid contains nutrients specially balanced to feed the cuttings. Second there is are special measures to ensure that the roots have access to air. This can be done a couple of ways, first by increasing ...


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You will always need micro and you won't need bloom if you aren't growing fruiting plants. So can just use micro and grow for leafy veg.


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You can use simple tap water for germinating seeds. Seeds are self containing packets and have all the necessary nutrients to start the root system and probably first set of real leaves. (The one that shows up first are not real leaves, they are seed leaves and are of generally different shape) if you want your seedlings to grow up quite a bit in it's first ...


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