Riddle Me This - EI: NO3=0, PO4=10!
I have a 75 Gallon, 3.5 WPG, pressurized CO2, heavily planted tank. I do EI at this rate:
NO3 = 1/2 tsp
PO4= 1/4 tsp
K2SO4 = 1/4 tsp
CSM+B = 10ml
Fe = 5ml
CaCO4 = 2 TSP per week (our water here is so soft that it comes out of the tap at almost 0 gh/kh).
I religiously do 50% water changes once a week.
I started having green spot/dust algae problems on my glass and leaves, so I pulled out the test kit and was shocked.
First off - my nitrates are at zero (plants are pearling so I guess it is getting all used up)
Secondly - my Phosphates were through the roof.
Is this wrong? Should I cut back on Phosphates? Do a water change?