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[APD] Re: Bacterial Bloom
If it really is a bloom of bacteria, then Daphnia will filter them
out and start producing eggs. Take a sample of the water and
introduce some Daphnia. Observe daily to see if their ovaries get
large and then release eggs into their brood pouch.
If it really is a bacterial bloom, then there must be some source of
organic food in the tank. Do you have DIY CO2 made by yeast? If so,
the pressure may be pushing some of the yeast culture bottle into the
tank. If that isn't a possibility, what about overfeeding? It is
hard to believe that a small bit of driftwood could release enough
organic matter to cause a bacterial bloom.
If it really is a bacterial bloom, then there should also be
bacterial films on surfaces. The protozoa population should
increase. It should be possible with a hand magnifier to see
surface-feeding ciliates moving around and often clouds of
free-swimming protozoan species as well. Pond snails love bacterial
films and grow rapidly when there are bacterial films to eat.
If it is not a bacterial bloom, then it must be a suspension of
non-living particles. If you put some of the water into a glass,
does anything settle out after a few days?
Paul Krombholz in sunny, mild, central Mississippi
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