Help my fish

[mindylh442]

Okay I have a new old fish tank. I've had my brother inlaws fish tank at my house for about 3 weeks now. He helped me get it all set up and I went out and bought an algea eater, 2 angel fish, and 2 cat fish. Slowly one by one the 2 angel fish died, then one cat fish died, I got replacement angel fish and then some how my whole tank turned like a redish color on the rocks and walls. Then my algea eater climbed in a corner and wouldn't move for a few days and now it just died. :'( I'm so distraught I don't know what I'm doing wrong, I don't know what this red stuff is, or what to do with it???
I have 2 beautiful angel fish left and a small cat fish what do I do?

 

[amyandlars]

Have you done any waterchanges? Scraped the sides with a tank scrupper? This could be algae. What are the readings on the tank for ammonia, nitrite, and nitrates? Those don't cause a tank to go red, but at least we can rule out those for the fish deaths if the readings are low.

Some other questions that can help?
Do you have plants? Live fake?
And substrate are you using?

 

[Ghost_knife]

sounds like a case of Cyno...I dont know if it's possible in FW systems though...Up your water changes though....that should help

 

[liv2padl]

it sounds to me as though you just added fish to a new tank and they in turn, died due to the ammonia and nitrite resulting from cycling issues. read through these links and you'll see what you might have done wrong. also, what size is the tank? the red algae is most likely 'brown' algae (diatoms) which happens regularly in a new tank. just wipe it away with each water change and it'll disappear before long.

http://faq.thekrib.com/begin-cycling.html

http://badmanstropicalfish.com/start_up/start_up4.html

http://www.pubnix.net/~spond/filter/nitrogen.html

http://fish.orbust.net/cycling.html