Well plants in Lithuania eat exactly the same stuff as plants in UK or China so it can't be too different than TPN+ or even JamesC's recipe.
His Nitrogen source can be either a nitrate salt , urea, or ammonium salt (or any combination of these three). In fact he even mentions that he uses "carbamide" which is a very fancy rocket science term used for common urea - which is a component of urine. Have you ever noticed that the grass always grows greener in the areas of the lawn that the dog urinates on? Or have you noticed that cow pies in the field always seem to have fresh grass growing through and around it taller than the surrounding grass in the field? Well that's because urea and ammonia are powerful sources of Nitrogen, which in turn is a major component of Chlorophyll, which is green.
His PO4 source is most likely KxPO4 and then I'm sure he just adds some chelated trace element mix along with an acid to keep the pH of the mix low and some kind of mold inhibitor. This is neither magic nor revolutionary. Anything else that is added is strictly for show and to make the product appear as if it stands out from all the others that have exactly the same ingredients to a greater or lesser extent. You should not be fooled by this. As in most cases you will be paying for mostly water, so only buy it if you consider that it's cheap and if you consider it more convenient than buying the same powder that he uses and just adding water. Look at the dosing instructions and calculate how long the product will last. If the numbers work out favorably then yeah, definitely go for it.
Always beware when you see stuff like:
...composition is balanced according to water plant needs. Substances are presented in a form that is accessible to plants and harder to absorb for algae.
Which of course is BS because algae can ALWAYS uptake exactly the same forms of nutrients as plants do - and quicker. With the possible exception of ammonia, Algae simply do not care what the concentration levels are. That's the difference.
This could also be some premixed form of Tobi's all-dominant-Euro-Mix as well.
The rest of the data on the page is a rehash of the same information that we know already. Nothing really amazing. There's nothing new under the Sun.