PMDD

Poor Man's Dosing 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.

Reference

 * The Krib - How PMDD came about


 * Practical PMDD Information (Sources and Doses)

Links

 * See article Plant nutrients.

PMDD supplies in the UK

 * Aqua Essentials
 * Garden Direct
 * Fluidsensor online

PMDD supplies in Canada

 * Hydroponics

PMDD Supplies in the USA

 * Aquarium Fertilizer
 * PlantGuild Chemicals
 * Rex Ferts

Dosage Calculator

 * Chucks Planted Aquarium Calculator