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- May 13, 2015
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no sweat and I apologize for not being clearer. I pretty much knew with that chemical filtration method and the age of the tank your Po is at zero.
One of the huge myths is in keeping the No and Po at zero. You actually need detectable amounts of those nutrients for the organisims to feed on. Some corals actually do best under very high amounts of those. Xenia actually being a cliche in that respect. You may have read about "bleaching" where too much light is being blamed, it in most cases is too few nutrients in the water are not able to sustain photosynthesis due to poor available nutrients under high lighting and become pale, its malnutrition.
So many recommend going slow, one reason is, what you do today like over feeding lets say, you wont see the results of that for a couple weeks. In your case the slow dose of GFO has slowly removed nutrients. So go back the other way slowly.
@WetWhistle You nailed it!
GFO a refugium are means of removing EXCESS nutrients. using them esp gfo removes all of them if gone unchecked. Its my main gripe about gfo, its always popularly recommended but in most cases unnecessary. A refugium chato etc regulates itself a bit like corals, if theres not enough food, it wont grow it wont strip the Po.
so me yes I would pull both, run carbon only, feed normally and keep a loose eye on the parameters. there's no more immediate solution beyond that. the phyto is just good for the tank, so use it.slowly
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I also think GFO is to aggressive for everyone to use as well. I recommend usage based on the following. If you have high levels that keep raising fast it is good to use at the very least temporally. If you have low and slow levels it is to aggressive and you should not and should look at some like a PO filter pad or macro algae. I also would pull both and just run carbon as i like to use as little chemicals as possible and prefer the natural approach. I am all about a refugium chato or caulerpa doing my nutrient export for me that is for sure. Chemicals have there place and time but i find most people don't need to run them constantly just as a temp polishing of the water every once in a while.
slowly




