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I have read extensively about your experiment with PMDD. So, I was wondering
if you could give me a little guidance? I really appreciate all your
experiments and documentation that you share so freely.
I have been trying out PMDD. The only thing is my Tetra Nitrate test kit is
not sensitive to low levels. It goes from 0 ppm to 12.5 ppm to 25 ppm etc.
What Nitrate test kit do you use? What would you recommend?
How would you recommend dosing Tropica Mastergrow on a daily basis? Right
now I just mix 1 tbsp of Potassium Nitrate and 2 tbsp of Potassium Sulfate
with 500 ml of water. I dose about 23 ml of that mixture daily for a 125
gallon tank. As far as the Tropica Mastergrow fertilizer, I just dose 75 ml
of it on a weekly basis when I change my water. I plan to split my
Mastergrow dosing to 3 x week of the aforementioned amount (3 x 25 ml = 75 ml
total per week). Also, I plan on getting a better or more sensitive nitrate
kit to keep my Nitrate levels at about 5 ppm. Please note, I am two days
into this new cycle.
The reason I started PMDD was the accumulation of algae (brown fur type, long
strands of green algae with maybe some bba mixed in). I tested for
phosphates with my Dupla test kit, which gave absolutely no reading (0). I
also tested for nitrates with my Tetra kit, which gave absolutely no reading
(0). All this algae started to happen when I upgraded my aquarium lights
from 260 watts to 392 watts via 2 x 96 watt (192) of power compact
fluorescent, which replaced 2 x 30 watts (60) of normal output fluorescent.
Also, I did a pretty brutal trimming a week later and it's been going
downhill ever since.
I know this is a lot to ask of you, but any information would be greatly
PS When do you dose? When the lights are on or does it matter (evening or