Green Water

[hoffy]

No, I didn't dye the water due to St. Patrick's Day. I have a major issue with my 75 gallon tank. The water has turned almost completely green. I have a wet/dry filter, recently added 4 fish. The tank had been running for about 3 weeks before I added 2 damsels and 1 clown. I waited about 3 weeks before adding the other 4 fish. I have ordered a U/V Sterilizer to fix the problem. Does anyone know how long it will take it to clear up the water? How bad is the green water for my fish?

[DyeLooper]

Need more info, have ya done any testing for ammonia? Tap water or RO/DI, temperature? Sounds like alot of fish in a short time after being set up. Got carbon running?

[hoffy]

I have tested for ammonia, nitrite, nitrate - all zero.
I initially used tap water to set it up. The temp. is 76.
I just added carbon this weekend.
I don't see how adding the fish would cause the algae bloom.

[DyeLooper]

Is the tank by open windows/alot of natural sunlight?

[Homer]

No. It is in the corner of a fairly dark room. Any sunlight is not direct and very minimal. Could this be enough light to cause this?
Will my U/V sterilizer clear out the water in a couple of days?

[Katspaw]

Hoffy, funny thing, I am surprized Chuck hasn't responded as he had one of his tanks get green water. You should be able to do a search on it here on this board and find out exactly what he did to get rid of it. It is an plankton explosion.. Good luck

Tracey

[tendar]

Sounds like some kind of algea bloom. If it is the UV should clear it up some if not completely in time. My guess anyways.

[Homer]

The U/V cleared up the green water completely in two days. Anyone who says they are only optional...well I would say they are a must! Thanks for everyone's help.