Originally Posted by ccamacho
its a new filter set up i didnt put any in the filteryes he gave me a filter and gravel and water. this sunday me and him are taking 10 gal of water out of his tank and bring it into my tank and befor we add it we are goin to take out 20 gal and put in fresh water. do u think this will help?
The bacteria needed to seed a new tanks cycle, is not in the water. So, moving water from his tank, to yours, will be of no help.
If you want the fish to live, I would not wait till Sunday for a water change. If the reading of 10 ppm nitrites is correct, I would do at least a 75% water change today.
Ask your friend if he has any established media in his filter, a filter pad or sponge, make it fit inside your filter. If not, remove some more gravel from your friends tank, place the gravel in a media bag, place the gravel in your filter. What ever your friend gives you to seed the tank, do not let it dry out. If it does not remain wet, the bacteria will die.
Bottled bacteria sometimes can help. I personally do not trust it. I have used it, but still tested daily, daily water changes to keep ammonia and nitrite under .25 ppm. The bottled bacteria will not hurt anything, so it would be safe to replace what was removed during the water changes.