GFO or No GFO?

Vodka dosing has its limits as far as phosphate goes.
When the nitrates get to -0- there is no further reduction of phosphates.
 
You would have to dose nitrates at that point to bring down phosphates. You can use Flourish from Seachem. Look up redfield ratio.
 
55 gallons with a 20 gallon sump.

two tablespoons sounds like a good place to start for that volume. I'd also test every day for the first week to make sure it's still not dropping two quickly. After about a week or two you should have a pretty good idea if you need to increase it or not.

I run 1 tablespoon for my 60+20 sump for just 6 hours a day to maintain my po4 at .02-.04 (Hanna) of course that's just my system and will likely be much different for you.

On a side note I've never lost and coral running GFO but I've really ****ed it off a few times.
 
Back
Top