Randy Holmes-Farley
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If the bacteria were nitrate limited, then so would the algae be, so it's not clear to me dosing more is desirable. If you remove a nitrate limitation while trying to cause a phosphate limitation, you might accelerate growth of algae.
FWIW, I'm not certain that algae cannot take up and use organic carbon if presented with high enough amounts of easily metabolized organics.
At the very highest doses of vinegar that I experimented with in my tank (more than 400 ml per day in my 120 display with total system volume about 250-350 gallons), at which point I got haze water and other undesirable effects, the problem caulerpa racemosa in the display tank seemd to grow faster than ever.
FWIW, I'm not certain that algae cannot take up and use organic carbon if presented with high enough amounts of easily metabolized organics.
At the very highest doses of vinegar that I experimented with in my tank (more than 400 ml per day in my 120 display with total system volume about 250-350 gallons), at which point I got haze water and other undesirable effects, the problem caulerpa racemosa in the display tank seemd to grow faster than ever.