PMDD

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Poor Man's Dupla Drops

A Plant Fertilizer Recipe for the Control of Algae in Planted Aquaria:
by Conlin and Sears

  • 1 Tbsp (~9g) Chelated Trace Element Mix (7% Fe, 1.3% B, 2% Mn, 0.06% Mo, 0.4% Zn, 0.1% Cu, EDTA, DTPA)
  • 2 Tsp (~14g) K2SO4 (Potassium sulphate)
  • 1 Tsp (~6g) KNO3 (Potassium nitrate)
  • 2.5 Tbsp (~33g) MgSO4.7H2O (fully hydrated magnesium sulphate, aka epsom salts; omit if already present in trace element mix)
  • 300ml distilled/de-ionized or RO H2O water
  • 0.5ml 9Molar (HCl) Hydrogen chloride (optional). See Molar solution.

It is a common misnomer that PMDD stands for 'Poor Man's Dosing Drops' but is indeed named after the propitiatory 'Dupla drops' method

Reference


Links


PMDD supplies in the UK

PMDD supplies in Canada

PMDD Supplies in the USA

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