Very beautiful tank kekon
Your reds are super!!!
I did as you said - i dosed much more Fe and i obtained rich colors
Was it easy to find seperate chelated traces in shops there here it is almost impossible, even trace mix was difficult to find.
Yes, it's quite easy to buy separate chelators. There is a shop in my town selling many interesting things: chelators, fertilizers, biostimulators, salts (such as K2SO4, KNO3 etc). However the chelators aren't good quality as they are not preared for use in planted tanks. For example, Fe EDTA chelator i use quickly oxidizes and i have to dose higher amounts of it. There is a possibility to buy DTPA or HEEDTA ones through the internet and will try to get them.
What was your thinking behind adding Mo, Ti, Ni in the trace mix and no Mb or Co?
Titanium works as biostimulator so i decided to add it but i'm not sure if it works properly. The problem is that the source of titanium - TiCl3 - must be dissolved in acidic solution otherwise it precipitates. When added to the tank a small "mist" appears in the water for a while which means that it dosen't dissolve completely. There is a special commercial titanium solution available but the shop that sells one sells 5L bottles only (they will have 200 ml bottles in the future).
I added nickel because of urea i tried in my tank (nickel is needed by urease enzyme). I came to the conlcusion that urea is very poorly absorbed by aquatic plants so i suspended the idea. Nickel is also used for iron utilization but it seems it works well withou nickel so adding it is not needed in my opinion.
Molybdenum must me in the trace mix as it's importany micronutrient.
Cobalt is needed by one aquatic plant only - Azolla - so i will no longer will add it to my trace mix.
What is the reading of you tank in total NO3 by adding 1 ppm NO3?
Now it's about 2..3 ppm and it seems to be enough for most plants.