03-19-2012, 10:55 AM
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Originally Posted by Geomancer
Yes, but my question was that the main tank is fully planted, which means there will not be much, if any, spare ammonia for the bacteria. The plants out-compete the beneficial bacteria. There will always be some, but no where near the quantities you would see in an unplanted tank. In my smaller tanks, I only get readings of 0-5 ppm Nitrate after a week (before water change) and I only change 25% of the water weekly. I do not know if the main tank would be able to support a seeded sponge or if some of the bacteria would die off making it insufficient to maintain a quarantine tank with ~10 (juvenile) fish in it.
I also don't believe it would need to be running in the main tank, the bacteria colonize every surface in the tank.
Fishes respiration produces ammonia not measureable with our test kit's and so long as fishes are breathing ,there will be enough bacteria present to seed a sponge filter or present on filter material.Fish foods,fish waste,decaying plant matter ,all contribute food for bacteria and while plant's are efficient at using the same food,bacteria will also thrive.