Originally Posted by Bluydgrl
LOL....Actually Gouramis are good to cycle a tank.Alot of research on them said they are good cycling fish.I would let my tank run until it was all ready for a few fish at a time.I'm going to get all live plants for my tank this time also.I'm going to go with a sand bottom.I work as a supervisor at the LFS and the manager said sand can be hard to clean cuz any movement in the sand can go right into the filter and ruin it.Is this true?
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Dwarf Gouramis are awesome creatures but they've been overbred to the point of lowering thier immune system. Do some research on DGD, Dwarf Gourami Disease aka Indovirus. Poor water quality certainly doesn't help.
Three Spot or Blue Gouramis are considered a pretty good fish for a "fish in cycle" beause they're very hardy, can handle larger changes in their water chemistry and they breathe from the air via their labyrinth organ so low oxygen in the water is not as much of a problem.
I'm not sure of how much you know about cycling so I'll just give the basics:
Fish give off ammonia in their waste. Fish swimming in ammonia will die, regardless of how hardy they are. At very least you will be shortening their life span.
"Cycling" a tank is developing colonies of good bacteria that consume the ammonia turning it into nitrite. Nitrite is even more toxic to fish than ammonia, but the good news is another type of good bacteria converts the nitrite to nitrate, which is only harmful to fish in large amounts. We remove the nitrate by doing weekly water changes.
In conclusion: Ammonia > Nitrite > Nitrate > Water Change