What is P04, and how do you dose it?

"Djay" wrote in message
...
After many googles on the subject, I decided to try and dose PO4. I had
little growth and poor nutrient uptake (read algae) in my 70 gal
pressurised
CO2 high light tank. Nitrate remained high all the time and no real
pearling...

As I said, after reading multiple NG on the dosing of PO4, I tried it
today.
Slowly at first etc.
Immediate change in the pearling of my plants. Holy cow!

Anyone have similar results? I plan on dosing twice a week.

DJay