another paper that i found that i thought was a good read,  it goes on to saying how efective the latest chelating agent is,  but that is not main streem yet becouse of the higher price in making (EDDHA)

Ethylenediaminetetraacetate (EDTA) is the most common chelating agent found in synthetic fertilizers. Like other synthetic chelates, EDTA is an alien compound to the plant and is therefore not absorbed by the plant. When the chelated element (remember it’s encapsulated) is required, the plant will remove the element, for example iron, form the chelate and absorb the element. However, since the chelating agent is foreign to the plant, it will give up the chelating agent (EDTA) back into solution where it is free to chelate other positively charged elements. EDTA has four points of connection to the elements it chelates. Different chelates have varying numbers of points of connection. In some situations four points of connection may hold the element too tightly, where in other growing situations, it may not hold it tight enough.

For example, EDTA is better suited to slightly lower than neutral pH levels. Iron often becomes deficient at higher pH values such as those typically associated with rockwool or mineral soils.

Diethylenetriaminepentaacetate (DTPA) is a chelating agent better suited to high pH levels. As the chemical name suggests, it has five (penta, ie. Pentagram) points of connection to the element it chelates. DTPA is more costly than EDTA and is less soluble so it is found in smaller quantities than EDTA in most synthetic fertilizer formulations.

Several studies suggest that ethylenediaminedihydroxy-phenylaceticacid (EDDHA) is that superior synthetic chelating agent. Its relatively high cost prohibits it from being added to many synthetic fertilizer formulations. In a recent study conducted by the Research Station for Floriculture and Glasshouse Vegetables (Netherlands) it was demonstrated that plants perform better, even under adverse conditions when the primary source of iron is chelated by EDDHA. In the experiment, chrysanthemums were grown aeroponically, and a portion of the plants were inoculated (infected) with a root disease (pythium). Only four percent of the plants infected with pythium demonstrated chlorosis (yellowing of leaves associated with iron deficiency) when supplied with EDDHA. In comparison, 35% of the plants supplied with DTPA became chlorotic, and 18% of the plants supplied with HEDTA demonstrated chlorosis.

As a result, the dry weights of plants supplied with EDDHA were significantly higher in both infected and uninfected plants. An additional benefit found in tissue analysis showed that the plants supplied with EDDHA were able to absorb 2X the levels of zinc than the plants supplied with HEDTA and DTPA. This is significant to our purposes because zinc (and iron) is often locked out in the later part of flowering due to excessive phosphorous levels. Ever notice how yellow plants can get as harvest approaches

with these precrsors being so good i guess the next thing is how much and what to use  i have this product laying around

Green Planet Liquid Weight is a blend of simple and complex carbohydrates with triacontinol, yucca extracts, bio-available amino acids, ascorbic acid and low molecular weight humic acid. Beneficial carb sources support both your plant directly and act as a food source for the microbial life in the root zone. This leads to an increased absorption of essential nutrients and growth stimulants such as triacontanol. Fulvic acid helps chelate and elicit a hormone like response that increases the permeability of the root membranes allowing easier nutrient uptake. Liquid Weight has natural surfactants including yucca. Ascorbic Acid is responsible for many of the processes in plant growth and maturity, supports rapid cell growth, protects the plant from the harmful effects of UV light and dramatically increases the resin and essential oil content of the flowers. Liquid Weight is the premier flowering carbohydrate super supplement.
can anyone  please tell me, if this is the kinda what i want in  a veg hydro grow,  its a flowering product,  im already have triacontinol and microbes on hand as well, can i do better than the above product to chelate my nutes