pleasse help me

[catlinadarkmoon]

i really need help i have had 2 bettas in the last 2 weeks.both have died the water pulls out just fine when i run tests on them i have 2 smaller fish in the same tank i know big no no but they are just fine very healthy and very happy im so confused on why they are dieing what do i do

[Cody]

We really need to know more about your tank.

Is it heated?
Is it filtered?
How many gallons does it hold?
How long has it been setup?
When were the fish added?
Did you go through a cycle?
Water Change Schedule?
Water Parameters (Provided with a LIQUID test kit)?
What are the other fish?

We need to know all of this to help you out.

[catlinadarkmoon]

the tank is not heated it stays around 75 to 78 degees i do not have a filter on the tank as to the fact is only 1.5 gallons but i do have a airater on it so the is always air in the tank the tank has been set up for 2.5 weeks and cleaned 3 time a week 50% at a time the fish were added 2 days after set up so that the tank could have time to age im not sure what a cycle is please explaine the acid was 0 h was 7.4 nitrates were 0 the fish in the tank are 1 zebra del and 1 pinki both get along with the betta great im so confused both of the other fish are doing great

[Cody]

What are a zebra del and a pinkie? Do you mean Zebra danio?

The tank needs to be heated and filtered. Also, it needs to be at least 5 gallons, better yet 10 because of the tankmates you have. A 1.5G will hold nothing but a handful of shrimp.

Your tank also failed to cycle, but a 1.5G unfiltered tank will never do that.

Here is a great post about cycling. It is the second post.
http://www.fishforum.com/betta-fish/...12/#post156131

In order to fix this, you need to upgrade your tank a provide proper care.