Fourish and Flouish Iron

[djlen]

I'm going to start dosing more Iron and before I call Big Al's and get the large economy size, is there another product that would be cheaper to use to dose Iron than Flourish Iron. For example, plain old K2SO4 can be purshased elsewhere a lot cheaper than buying Flourish Potassium. Also, the bottle of Flourish recommends dosing 1-2mls per 50 gals. I usually double up on that when I dose. Would that be an acceptable rule of thumb for Iron as well?
Len

[Tempest]

Flourish and Flourish Iron seem fairly economical from Big Als so I haven't worried on getting it in a dry mix. I use two capfuls of flourish and half a capful of the iron two or three times a week.

[plantbrain]

Adding more flourish or adding just flourish iron by itself + flourish might make a slight difference. Some folks add a spike of just iron once/twice a week.
I'm not so sure it makes any difference whether you add one or buy another product to add along with Flourish.

If you want to cut cost and still get a decent array of traces:
Use flourish for the B and all the other microtraces. Buy some cheap CMS or Plantex dry trace mix from the PMDD places, split this with the flourish 50/50.
30$ worth will last a lifetime and extend the Flourish usage 2x.
The CMS/plantex has ETDA iron and the Flourish has gluconate iron. The CMs stuff will like registar on a test kit better but that doesn't say a whole lot.

Regards,
Tom Barr