PO4 is phosphate. Usually it is shunned like the plague in a planted
aquarium tank, however under certain conditions of high light and CO2, the
plants can use up all available PO4 in the water. I think it is called
nutrient starvation. Without it, they cannot process the other essential
nutrients like Nitrate and Potassium. These unprocessed nutrients build up
and cause algae breakouts. Believe it or not, I dose drops from a Fleet
Enema bottle... Contents are Phospates and salt.

DJay,


"Sam" wrote in
:

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