Why does my fish keep dying off?

Jasc · Oct 6, 2023

I have a 20 gallon tank with just two clowns. My stats are 0 ammonia 0 nitrite 0nitrate and 7.2 PH. I used to have Flame Hawkish, Royal gramma dottyback and 6 line wrasse that all died. I did 50 percent water changes when they each died. And i have no idea why they are dying please help.

Lbrdsoxfan · Oct 6, 2023

If your not qt'ing fish or sourcing from a GOOD qt'ed source your more than likely are introducing some illness to your tank. Any symptoms before they die? Could be just stress, could be more...

hexcolor reef · Oct 6, 2023

Are you adding bacteria to the tank with each addition of new fish?

Ly78 · Oct 7, 2023

PH 7.2? Looks a bit low. Whats your salinity at?

ISpeakForTheSeas · Oct 7, 2023

Yeah, I think we'll need a bit more information here:

-What is your tank's salinity?

-Is your tank cycled? (0 Nitrate seems off for a cycled tank.)

-What symptoms did the fish show before dying?

Gavin Noy · Oct 7, 2023

jensclowms said:
I have a 20 gallon tank with just two clowns. My stats are 0 ammonia 0 nitrite 0nitrate and 7.2 PH. I used to have Flame Hawkish, Royal gramma dottyback and 6 line wrasse that all died. I did 50 percent water changes when they each died. And i have no idea why they are dying please help.

Im new to the hobby but i think your ph is too low for a start. What water tests are you doing?

Jasc · Oct 7, 2023

ISpeakForTheSeas said:
Yeah, I think we'll need a bit more information here:

-What is your tank's salinity?

-Is your tank cycled? (0 Nitrate seems off for a cycled tank.)

-What symptoms did the fish show before dying?

1.025 Salinity. Yes it is cycled. I just did a water change so it might be cause of that but avg is 0-5ppm. Fish was inactive.