Originally Posted by jellopuddinpop
Thank you for the reply @happi
The Mg @ 7.5 is only after dosing Mg to 7.5 with MgSO4, it was truly near zero. I verified with both a Red Sea test kit (used 5x the solution to try to dilute the titration), and by calculating Ca and dGH, and using the Mg/Ca formula to get to the conclusion that I have almost no Mg. I donít need to raise it from here, I just wanted to be sure that adding it wasnít going to hurt anything. Iím also going to be dosing DPTA Fe starting after this coming water change, so that will be the first change I make to see if it have any impact.
Iíll try to take some pictures when I get home, and Iíll post them later today.
I have no issue making my own, but Iíll have to dig into the recipes and purchase all of the individual chems. Is @burr740
still selling a kit? I tried going to burraqua.com, but it doesnít look like the website is active yet.
Lastly, would you recommend I increase my EI dosage to full strength, or wait to see what changes the DTPA Fe have? There are lots of tank pics in my journal to have a look at the overall tank, and look at the plant mass.
You can certainly add more Mg if you want, but try the other options first. Also, you are not the first one to report having a low or 0 Mg levels, I have some other people report this as well. am not sure where is all the Mg going after adding it to the water, there are several possibilities, some of them are that plant absorb Mg rather quickly but again I doubt they will absorb the entire 7.5 ppm Mg so quickly, other possibility are Mg forming MgCo3 which is less soluble in water, last possibility the CEC of soil absorbing the Mg. go ahead and try DTPA Fe, if possible try to get Mn as well if you can.
You donít really need to buy it from Burr website, all those chemicals are available at Alpha chemicals and from many other sources, I highly recommend using DTPA/EDTA based Micro in Harder water, the Non chelated one will work as well but you might be adding them daily or more often to get the desired results.
You can use my recipe or methods if you want to make your own recipes, I have given the formulas and methods which should help user make whatever recipe or whatever numbers they want. Making your own Micro are the way to go now days, this will help save money as well as give you full control of your water parameters, good example is there is plenty of Copper in majority of tap waters, which can be completely taken out when you make your own recipe, otherwise you are stuck with adding more copper coming from CSM, Miller etc
Lastly, I personally Donít use or Recommend EI, this is just my opinion. Half of EI is probably better option but with some tweaks. You can also Try PPS
Based on your Current Parameters, you could try something like this:
Ca 70 (coming from Tap)
Mg 17 (if you want to try the 4:1 ratio)
NO3 (1 ppm NO3 daily from KNO3, 0.1 N from Urea daily, total 1.44 NO3 daily)
PO4 1 ppm weekly (might have to adjust due to higher Ca and CO3 levels)
K (I personally add less, but in your case aim for 10-15 ppm Weekly)
Fe (0.1 ppm Weekly from DTPA Fe)
Fe (from CSM+B 0.25 Fe weekly)
Mn (0.05 ppm Weekly)
These numbers should give you some insight of what might be happening in your tank, if they fail to work, we will continue from there and see we could do