Should I hold on doing this if it is that aggressive then? My tank just recently recovered from a crash due to gfo overdose that killed almost all my sps. But my hair algae is smothering the rest of my corals to death slowly. I'm manually removing as much as I can on each water change but they just bloom again.
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Originally Posted by reefwars
you may have to run gfo ( or other means of removal ) or you may not , in a case where both read zero that doesnt mean it doesnt exist thats just the limitations to your test and doesnt take in account the fact you add both.
eventually bacteria will out compete macro algae, you do have to be careful and watch your corals as some corals dont appreciate the aggressive export of nutrients ( bacteria are pretty efficient )
its a very fine line between what corals need, plants and animals need and what bacteria needs....they all have similarities yet all require different things 
as your dosing you keep an eye on your livestock , it may sound counter productive but there will come a time where you will either have to cut dosing down to match your current load or add to the existing bioload and boost your bacteria numbers and export, adding to your bio-load also has benefits to weigh against the downsides  |