Did diatoms drop my phosphate to zero?

elorablue

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Just wondering.
Tank is a 75L cube in its' 8th week.
I test very regularly, almost every day at this point. I had the diatom scourge happen about a week ago. In 36 hours everything was covered with that charming brown.
Anyway, what I found interesting was the drop in phosphate directly coinciding with the diatoms.
Up until they hit my phosphates were in the 0.05 range give or take a point or two, but the day after they had dropped to zero and have remained there.
I got a significant clean up crew and the diatoms are basically gone (visually at least)
Just wondering if this drop is expected?
thanks for any thoughts
 

Fish Think Pink

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Just wondering.
Tank is a 75L cube in its' 8th week.
I test very regularly, almost every day at this point. I had the diatom scourge happen about a week ago. In 36 hours everything was covered with that charming brown.
Anyway, what I found interesting was the drop in phosphate directly coinciding with the diatoms.
Up until they hit my phosphates were in the 0.05 range give or take a point or two, but the day after they had dropped to zero and have remained there.
I got a significant clean up crew and the diatoms are basically gone (visually at least)
Just wondering if this drop is expected?
thanks for any thoughts
Thoughts:
- yes algae consumes phosphates and nitrates
--- expect drop; its why macroalgae refugiums popular
- "significant CUC" ... now are they going to starve?
--- if they die then they'll contribute to phosphate rise if not removed
- going forward work on reducing silicate introductions

Another option was/is siphon out diatoms to remove excess silicate. See post #10 in this thread:
 

Algae invading algae: Have you had unwanted algae in your good macroalgae?

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