You're totally misinterpreting what I am saying. I am saying grow hydro. Forget organics. Organics is rubbish and will give you lower yields and more complexity than you will ever need. What I am however saying is beneficials in hydroponics rock in certain situations - particularly in organic substrates such as coir and peat. However, you need to handle it correctly. If you are saying that using 1ml/L of a ferment of molasses, placing a lid on a nutrient tank along with a fermenting airlock, and using a $2 inline 0.2 micron syringe filter on your airline is more complex then you are seriously grow challenged. What I am also doing is educating growers how to handle the use of beneficials correctly. Another thing is that inorganic nutrients only provide specific nutrient ions. Benefits (yield improvements) can be gained from the use of certain organic elements in hydroponics. Eg - fulvic acid which acts as a chelator and complexer in solution and amino acids which can provide amazing benefits to growth (particularly in grow) and beneficial bacteria and fungi are scientifically shown to improve yields in hydroponics through releasing IAA and other amazing compounds. Besides this they induce plant defense responses through SAR and other means. But sure mate - if you want to settle on mediocrity go for your life (each to their own). I don't teach people how to be mediocre.
BTW - I teach run to waste. Fresh feed every time. No nutrient depletion. The reason I teach novice growers RTW/DTW is because I totally understand the science of plant nutrient interactions. E.g. preferential nutrient uptake where N,P,K and Mn are actively absorbed in high amounts while other nutrients are hardly taken at all. This creates horrible nutrient imbalances in recirc systems when growers who have limited knowledge are working with them. I could give you a lesson in this but you're a dogmatic fool who probably wouldn't listen so why bother. Basically, recirc systems are not suitable for untrained, non formally educated growers. RTW ensures ideal nutrition every time at every feed and also ensures pH stability because OH- or HCO3- or H3O + ions are not messing with pH. I.e.
Why does pH change in nutrient solutions?
This comes back to understanding the power of hydrogen, otherwise known as potential hydrogen in solution and some of our earlier material on EC where we touched on positively charged cations and negatively charged anions in hydroponic solutions. Other than this, pH changes largely occur due to the principle of electroneutrality where chemical reactions take place on an equivalent basis. The law of electroneutrality states that in any single ionic solution (e.g. a hydroponic nutrient solution) a sum of negative electrical charges attracts an equal sum of positive electrical charges. Therefore, according to the principle of electroneutrality, the total charge of an aqueous solution must be zero. For this to occur, the number of positive charges contributed by cations must be equal to the number of negative charges contributed by anions.
Based on this, in very simple terms, when a plant removes a positively charged cation from the nutrient reservoir/tank it leaves a negatively charged anion in its place and when a plant removes an anion from the nutrient reservoir/tank it leaves a cation in its place.
The ratio in uptake of anions and cations by plants may cause substantial shifts in pH. In general, an excess of cation over anion leads to a decrease in pH, whereas an excess of anion over cation uptake leads to an increase in pH. That is, when the anions are uptaken in higher concentrations than cations the plant excretes OH- or HCO3- anions to balance the electrical charges inside, which increases the pH value. This process is called physiological alkalinity (Marschner, 1995). For example, if a plant absorbs the negatively charged nitrate nitrogen (NO3-) heavily it will start to contribute more OH - than H3O + ions into the solution and the result will be an increase in pH. On the other hand, if the plant absorbs high levels of the positively charged potassium (K+) it will contribute more H3O + than OH - ions and the result will be a decrease in pH.
This phenomenom is frequently seen where plants are grown with a full spectrum nutrient solution that contains nitrogen either as ammonium nitrogen (NH4+) or nitrate (NO3- ) nitrogen. When plants are fed only with NH4+, cation uptake generally exceeds anion uptake and the pH of the substrate decreases. On the other hand, when the plant is fed only with NO3- the uptake of anion to cation ratio is typically higher and as a result the pH of the substrate increases. This becomes important in understanding that a well formulated hydroponic nutrient contains an ideal ratio of ammonium nitrogen to nitrate nitrogen in order to minimize this situation and better maintain pH stability in the root zone and nutrient solution. We cover more about this on page….
As a general rule, daylight photosynthesis (when the plant is taking up high degrees of mineral nutrition) produces hydrogen ions which can cause the nutrient acidity to increase (lowering the pH). When the lights switch off photosynthesis stops and the plants increase their rate of respiration. This coupled with the respiration of microorganisms uses up the hydrogen ions so the acidity of the solution tends to decrease (pH rises).
And sorry, the system you just described is nothing like deep water culture. Chalk and cheese. I hope those rather average looking plants are in flush stage. You have some serious deficiencies if not.
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) you've ever spoken to in all your years on the internet? 
