I'm going to have to use these nutes for awhile. I just bought gallon jugs of all of the products they sell. I have been using 1 t of cal mag per gallon up until today I stopped because I thought I read that I didn't need it with the hardness of my water. I was thinking maybe I was over doing it and maybe that could be contributing to my problem.Sounds reasonable to me but your ferts are pretty high in K for veg and could lead to potassium toxicity over time. Too high in N for flowering too.
I don't grow in coco but have heard that it needs extra CalMag as the coco binds those up and makes them unavailable to the plant. There is very likely enough of both in your tap water but something to remember should you go with RO only.
I'm a huge fan of Advanced Nutrients and have been using them almost exclusively the last 15 years. Switched to their 2-part Sensi and Connoisseur a couple years ago but can't really restrict the N in later flowering the way I want so recently bought gallon jugs of their 3-part so I can go Lucas formula after the stretch. Other than that I only use Big Bud, Rhino Skin and some off brand CalMag for all my growing whether in soilless or DWC. With the pH Perfect nutes I haven't bothered checking pH for the last couple years either with no noticeable problems.
What does the Epsom salts do?It certainly does contribute to the load of salts in there and hard water has lots of calcium and magnesium so extra isn't needed tho most people still add the CalMag. I never used CalMag at all with the old AN nutes and RO water and never saw deficiencies in either. I just use it at about 1/4 strength now when I do use it. I did used to add a little epsom salts once in a while.
It is all very interesting. Now I wish I had paid more attention in science class instead of out back smokin a bowl. Lol For now I guess I'll just have to give the recommended amounts of my ferts and cut them in half and see how that does.Supplies magnesium and sulfur. Epsom salts is the common name for magnesium sulfate. Saltpeter = potassium nitrate and can be used in moderation to treat a potassium deficiency and supply some nitrogen too. There are many more as all plants eat salts whether from hydro nutes or organic soil growing. In organics the microherd breaks down organic matter into the same salts that are supplied directly with hydro nutes. That's why guys who mix up their own blends of organics wet it down and let it "cook". That allows time for all the bacteria and fungus in the soil break things down into the salts that the plants can feed on.
Lots of interesting things about how plants do their things.
