Non Nitrate Ratio?

derekparr

Junior Poster
Jan 23, 2005
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So.. I've increased the amount and how often I dose nitrates and phosphates beyond the standard suggested PMDD level to the IE level. Plants are doing well. etc. etc.
But, I was wondering, should I be increasing the levels of the other ingredients of the PMDD to keep the same ratio with my current nitrate dosing? Or does it not work that way? When I say "other ingredients" I primarily mean "MgSO4+7H2O" and "K2SO4".
Thanks for the help.
 

Tom Barr

Founder
Staff member
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Jan 23, 2005
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Re: Non Nitrate Ratio?

Not K2SO4, it's not needed for the K+, you get enough from KNO3.

Mg is not needed nearly as much, you can add it once a week, after the water change if you your Gh is low or if you know for a fact that the Mg is low in the tap etc. Generally 1/8 teaspoon MgSO4 once a week per 20 gal should be plenty.

Regards,
Tom Barr