New nano aquarium problem

[marcos reef]

I’ll tell you a little about the process:
I have a hydra filter.

I had 2 clownfish, then I introduced a damselfish and everything was fine.
Then introduced a small gramma but the damsel attacked him and killed him.
I took the damselfish out, and the next day my black clownfish woke up with a white spot (ich)
He died, and I took medication for the ich…
The others were fine, but suddenly, they died in the next 4 days.
After I waited about two weeks, I put in a cardinal fish and a gramma. and everything went well for 3 days, the next day Granma woke up dead. and the cardinal 3 days later
I don’t know what’s going on, I bought live rock, and added bacteria “stability”. But now, I don’t have any fish. The only one that still alive is lismata

 

[coralboi56]

I’ll tell you a little about the process:
I have a hydra filter.

I had 2 clownfish, then I introduced a damselfish and everything was fine.
Then introduced a small gramma but the damsel attacked him and killed him.
I took the damselfish out, and the next day my black clownfish woke up with a white spot (ich)
He died, and I took medication for the ich…
The others were fine, but suddenly, they died in the next 4 days.
After I waited about two weeks, I put in a cardinal fish and a gramma. and everything went well for 3 days, the next day Granma woke up dead. and the cardinal 3 days later
I don’t know what’s going on, I bought live rock, and added bacteria “stability”. But now, I don’t have any fish. The only one that still alive is lismata

How long has the tank been set up

 

[Mr. Mojo Rising]

The tank is looking rather small, what size is that? A Damsel will claim a 20 gallon tank to themselves.

There are also no hiding spots, no where for a fish to hide out for a few minutes. The tank looks very nice for us to look at, but not always the best for our small fishes that are normally prey fishes and hide by nature. Gramma especially likes to hide in caves all day.

 

[Nano_Man]

As above have said how old is your tank and how did you cycle it with
Just more information helps members help you

 

[Otto]

tank does look small for all those fish, what size is the tank?

 

[marcos reef]

How long has the tank been set up

more than 2 months

 

[marcos reef]

As above have said how old is your tank and how did you cycle it with
Just more information helps members help you

My tank is about 2 months and 2 weeks. The problema i do not cycle, I just wait 2
weeks, and I put 2 fish the first time. It is assumed that with the filter I have (hydra) you can put fish in faster. but after they died, after a week I began to put in live rock, and stability (bacteria). and I've been like this for 3 weeks.

 

[marcos reef]

tank does look small for all those fish, what size is the tank?

My tank is 20 liters

 

[marcos reef]

The tank is looking rather small, what size is that? A Damsel will claim a 20 gallon tank to themselves.

There are also no hiding spots, no where for a fish to hide out for a few minutes. The tank looks very nice for us to look at, but not always the best for our small fishes that are normally prey fishes and hide by nature. Gramma especially likes to hide in caves all day.

Yes, when i had the gramma he hides in a space under the rock. and went out to eat. I understand the point, but then why did they die again if there were only 2 fish in the end? the gramma and the cardinal, one day the gramma died, and the cardinal three days later

 

[Mr. Mojo Rising]

Honestly the tank is overstocked, and you shouldn't add any more fish. The tank is too small for 2 clowns, and like I mentioned, a damsel will claim a 20 gallon tank to itself and will kill any fish that comes in its territory.

I suspect the damsel killed the fish, or they died of stress or disease. This size tank should have one small goby as a fish and thats it, the other fish you are trying to add all need larger than 15 gallons each.

 

[kevgib67]

If you truly had an ich break out you have to leave the tank fishless for 42 days for the pathogen to die out, otherwise every fish you add will get ich.

 

[marcos reef]

Honestly the tank is overstocked, and you shouldn't add any more fish. The tank is too small for 2 clowns, and like I mentioned, a damsel will claim a 20 gallon tank to itself and will kill any fish that comes in its territory.

I suspect the damsel killed the fish, or they died of stress or disease. This size tank should have one small goby as a fish and thats it, the other fish you are trying to add all need larger than 15 gallons each.

Honestly the tank is overstocked, and you shouldn't add any more fish. The tank is too small for 2 clowns, and like I mentioned, a damsel will claim a 20 gallon tank to itself and will kill any fish that comes in its territory.

I suspect the damsel killed the fish, or they died of stress or disease. This size tank should have one small goby as a fish and thats it, the other fish you are trying to add all need larger than 15 gallons each.

yes you're right. But as soon as the damsel killed the little gramma, I took her out and returned her to the store. After that was when the clownfish died.
After 2 weeks, I put in a small gramma and a cardinal. There were only those two, and everything was perfect, eating well and behaving well. and suddenly on the fourth day, the gramma wakes up dead below. Yes, I completely understand the space thing with the damsel, but after that I don't know why my fish kept dying

 

[Mr. Mojo Rising]

yes you're right. But as soon as the damsel killed the little gramma, I took her out and returned her to the store. After that was when the clownfish died.
After 2 weeks, I put in a small gramma and a cardinal. There were only those two, and everything was perfect, eating well and behaving well. and suddenly on the fourth day, the gramma wakes up dead below. Yes, I completely understand the space thing with the damsel, but after that I don't know why my fish kept dying

Again the tank is too small for the kind of fish you have and it is stressful to the fish. Google "what size tank for a pair of clownfish"

In addition, that filter is not adequate to support the bioload of 3 fish. There is also no water movement so might also be a low oxygen situation.

 

[Nano_Man]

All fish have a tank size requirement
Damsels are very aggressive when settled in if you put three fish in that size tank they have no way too get away from each other stress brings on illnesses what I would do is a bigger tank or first of all make sure your tank is fully cycled. Then add one fish leave it settle for a couple of weeks try and buy peaceful fish x1
You can not rush anything in this hobby

 

[Mr. Mojo Rising]

by the way, clownfish are also damsels, they are also territorial and aggressive to other fish that come in their territory, it is possible they killed the gramma

 

[Otto]

My tank is 20 liters

5 gallons for the americans

 

[marcos reef]

Again the tank is too small for the kind of fish you have and it is stressful to the fish. Google "what size tank for a pair of clownfish"

In addition, that filter is not adequate to support the bioload of 3 fish. There is also no water movement so might also be a low oxygen situation.

I understand, thank you so much.