Quote:
Originally Posted by bertoni
One of the bricks probably would be enough, assuming that the frags are the usual photosynthetically-enabled corals and the feeding rate is low enough. That type of corals probably emits little to no ammonia. You could skip the sandbed, as well. Heavy feeding might leave a fair amount of food in the water column, but I think it'd take a lot to overload one of the Marine Pure blocks. I can't quantify anything, though.
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What is the capacity of water and planktonic bacteria to oxidize ammonia or assimilate ammonia? Wouldn’t carbon dosing heterotrophic bacteria be a viable replacement for autotrophs and their requirement for surfaces? Seems to work in the shrimp industry. They calculate the amount of carbon they add based on nitrogen input. Given the light feeding of frags, the water might not become cloudy and the bacterial flocs could be food.