So I just bought some ferts from greg watson...
I bought a pound of each:
Mono Potassium Phosphate (KH2PO4)
Potassium Nitrate (KNO3)
I know I should have checked before I completed the order... but did I get what I needed? I noticed someone else was dosing potassium sulfate for their estimative index... and honestly, I'm confused. Thanks.
And I got the idea to buy these specific ferts from Tom Barr's post on the EI:
A Typical Tank
A typical routine for a high light tank with low fish load:
Volume 80 liters (20 gal high standard tank)
5.5 watts/ gal. - two 55watt 5000K/8800K lamps
CO2-25-30ppm (I turn my CO2 off at night)
Fluorite (any porous iron rich material will do) about 7-10cm depth
A Typical Dosing Routine
1/4 teaspoon of KNO3 3-4x a week (every other day)
1/16th-1/32nd teaspoon of KH2PO4 3-4x a week (every other day)
Traces added on off days as the macro nutrients, so 3x a week, 5mls each time.
SeaChem Equilibrium 1/8 teaspoon after water change.