I followed the PMDD recipe from thekrib.com. It includes K2SO4 and
MgSO4 in addition to the chelate trace elements.

I also should add that my fish load is quite high:
2 Neon blue discus
2 Clown loaches
3 cardinal tetra
3 Siamese algae eaters
1 bristlenose pleco
1 Blue ram.



"Isaac" wrote in message gy.com...
The only thing in your PMDD is the trace mix?
You're not dosing Potassium at all?

You should invest in a water hardness kit to determine GH and KH... They're
very cheap.
You may need to dose Mg and Ca as well.


Isaac


"PR" wrote in message
om...
- I dose PMDD (only the chelate trace mix) weekly to maintain Fe level
at ~ 0.1 ppm
Poe