did new plastic plant killed my fish?

[RANNIT2]

I changed water about a week ego and put a new plastic plant in. Couple days ago the first fish died, today another one. Others do not look too happy. There is a green sediment on the sides of the tank. I yanked plastic plant out, added Cycle. Any other suggestions? Is plant in question could be the reason for sudden change?

[Fishyfanatic]

Is the plant made for aquariums?

How long has teh tank been set up? What are your water parameters? I'm assuming the green sediment is algae.

[Zagz]

Depending on whether it was an aquarium safe plant it may have. When you say green sediment do you mean algae? How long has the tank been set up? How often do you do water changes? Do you have a test kit and what are your parameters?

Don't bother using the brand cycle. It doesn't contain any bacteria at all. All you need to use with water changes is a good dechlorinator like Prime.

[RANNIT2]

aquarium has been set up for over 3 years. only plants before were from its former owner, so no changes there. i bought this plant at the aquarium section of petco. i never had algae problem before, so i guess that is what are on the walls now.
i change water every 2 weeks 30-40%. i dont test regularly (because when i complained at the local aquarium store they stated that the local water is ph high and is fish tolerates it ok, i dont need to worry about it).

[Zagz]

No your ph is fine if stable. I was inquiring about ammonia, nitrite and nitrate. From what you tell me I would not suspect the plant. I would do an extra water change and see if that helps the fish. Generally recommended to do weekly water changes of 25-50%. Do you add dechlorinator when doing water changes?

[RANNIT2]

yes, i use Aqua Plus. ok, i would do water change and would see what happens. Do you recommend to check ammonia/n/n before changing water?
i greatly appriciate your advice. I hate to see fish that i had for over 2 years die for no reason that i can think of/predict.
thank you

[Zagz]

Yes check before the water change.

[RANNIT2]

ammonia 0
nitrite 0
ph 7.0

[gsongy]

I am a newbie so I will ask the newbie question, did you rinse the plant off with water first?


Gerald

[Purrbox]

Since this aquarium has been set up for a few years, perhaps the fish died of old age? If both fish that died are the same kind and aquired at the same time, this would fit. Some fish only live a year while others live longer the people. Knowing what type of fish died would help to determine if this could be the case or not.