Bacteria Bloom question/identification

[roghib]

Is a Bacteria bloom hazardous at all for fish?

At this point this is what I am assuming I am witnessing.

Recap:
Finished a fishless cycle on 90g tank a week ago....moderately stocked tank 6 days ago.
The tank is planted moderately as well. They have been in tank almost 19 days.
Today the tank is starting to turn a cloudy white in last 12 hours.

Parameters:
Temp: 76
Ammonia: 0
Nitrite: 0
Nitrate: 5
Ph:7.0-7.2
Kh:3-3.5

The only thing that I have been adusting is the co2 this last week. Trying to get ph down to around 6.8.
All substrate and wood have been in tank for well over 2 months.
I am not using any charcoal as I have a wet/dry overflow filter.

[Hurley]

Are you sure its white cloudy or is it a light green cloudy? One way to tell is to fill up a clean, clear glass container and hold it up against a white sheet of paper. If it is white then you have a bacteria bloom. If it is green then its an algea bloom.

[dr_sudz]

This could be the cause of going from a fishless cycle to actually having fish in the tank, the bacteria could have to readjust if the fish you have in there are larger, or you are possibly feeding a little too much.

[fish_freak]

The bacteria associated with a bacteria bloom are not the same as the bacteria in the bio filter. This ussually happens when there is an abundance of organic waste in the water collum for the bacteria to feed on. It is quite common with new tanks. A good treatment for it is melafix. It won't harm the bacteria in your bio filter but reduce the number of free floating bacteria causeing your bacteria bloom. These bacteria will always be in your tank but shouldn't be prevelent enough to be in a "bloom".

[Bennett]

Assuming that this is a bacterial bloom. Is it harmful to the fish? Is there a way to deal with it without adding other things to the water? Will it correct itself in time? I am having a similar issue with my 8 week old tank.

[Star_Rider]

no it is not harmful to the fish.
bacterial blooms are actually quite common especially in a new tank.

fish_freak is correct..it is usually in balance. in new tanks it is common for an imbalance to occur and a bloom of bacteria.

a white cloud can also occur if you had a slight 'green' water condition..aka algae bloom in the water column. it will turn white when the algae die off..this is also not harmful to the fish.

you can do water changes to try and combat these or simply wait it out.

you do not have to add anything to the tank to com bat this. I would suggest tou try cutting back on feeding to help starve off the bacteria/algae.

[fish_freak]

Sorry I should have been more clear no you dont have to add anything to the tank but if it really bothers you then melafix tends to clear it up. Its really mild dilution of melluca oil which is a nautral antibiotic kind of like garlic. I once had a 30 gallon in bloom for 6 months. I was about to throw the thing a way when I read about trying melafix if TFH and sure enough it worked wonders.