I've been reading some of your stuff about Jacks 321 on a couple different sites and threads. I wanted to jump in and pose this issue/ question about Jacks. I'm wondering about health issues with salt nutes that have heavy metals. It seems as if all of them have some level, but some appear to have more than others. Washington State has a site where nutrient companies are required to report heavy metals in their mixes. Here is the link to Jacks Hydro:
http://agr.wa.gov/PestFert/Fertilizers/FertDB/prodinfo.aspx?pname=4505
Then if I look at something like Canna Coco it appears as though their numbers for heavy metals are lower.
http://agr.wa.gov/PestFert/Fertilizers/FertDB/prodinfo.aspx?pname=4611
But, one is a powder and one is a solution concentrate and of course they are different NPK, so it's hard to really know how to compare the two "apples to apples". Do you or anybody else have any knowledge on this? I have started using Jacks 321, but don't want to keep using it if I'm just going to be huffing a bunch of nasty chemicals. Or maybe I spend the money and go with a Canna if it really is "cleaner"?
Also, do you tend to hold off on the epsom unless you need it, or do you always add it?