Do all trace mixs stack up.

[Shiftaltumlock]

I would like to trim on is the Seachem Trace. Geez!! This stuff doses 3 times higher than thier other product. This means 6 times higher for me. I go thru 500 ML a month.
Have you ever used any Dried type trace elements. The ones were you mixup a gallon at a time. I have seen plenty of PMDD mixes out there but I have not heard how much 1 may be superior over another.

 

[GhoriG]

I've been using the trace mix from hydroponics.com - its
very economical and my plants seem to be doing well.
When I run out in 6 months or so (its lasted me over a year
already), I'm going to try TMG for traces.