View Full Version : Stocking Question
moevilla
06/06/2011, 11:26 AM
I have a 90 gallon tank with 30 gallon refugium (half full). Ready to add lifestock, want to add 13 chromis. That will be the only livestock in tank besides snail, hermits, and sexy shrimp. Can my water volume handle the bioload?
stovenut
06/06/2011, 11:46 AM
Assuming you have plenty of live rock for biological filtration, than the bioload will be quite low. Those chromis don't eat much. I would guess that a 6" sailfin tang likely eats and poops more than 13 blue/green chromis combined. I'd say you've got room for more fish as the reef establishes itself.
Chris27
06/06/2011, 12:01 PM
Your tank won't have any problem handling the load.....
What you will have though is a bunch of dead fish after a short time....
stovenut
06/06/2011, 12:06 PM
...and he means that the chromis school for a while but as they get older a pecking order develops and those low in the order get killed off in many cases.
moevilla
06/06/2011, 12:16 PM
I have a 5 inch deep sand bed in the refugium. Approximately 75 lbs of life rock in the display. Aqua C Pro skimmer (rated for up to 120 gallons). I placed an order with Bluezoo for 12 chromis, I already have one chromis. My hope is that all 12 survive shipping but realize that is highly unlikely. Hopefully I will end up with atleast 10 healthy fish.
moevilla
06/06/2011, 12:20 PM
Well, I have read the same thing about the chromis dieing off. I have also read that a group of them can be maintained for years. I guess it depends on who you ask. We shall see what happens.
Chris27
06/06/2011, 12:53 PM
...and he means that the chromis school for a while but as they get older a pecking order develops and those low in the order get killed off in many cases.
Yea that....:beer:
Chris27
06/06/2011, 12:54 PM
We recently put 20-30 in a large tank at the store, and within a few short days the killin' started.
moevilla
06/06/2011, 01:45 PM
What were the dimensions of the tank?
stovenut
06/06/2011, 01:56 PM
I put 8 chromis in my 240g reef, along with a few small fish (flasher wrasses, prawn goby, scooter dragonet, and banghaii cardinals). In 2 months I was down to 4. After 2 months, when I added tangs and larger fish, I was down to 2 chromis. I might have had better survival rates with more hiding places. My tank had a ton of open swiming space. But they just picked eachother off one by one.
dzfish17
06/06/2011, 02:00 PM
From what I've read the larger the tank (125+) and more frequent feeding will help keep a group of chromis alive. You might get lucky and end up with 3-5 when its all said and done.
Chris27
06/06/2011, 02:57 PM
What were the dimensions of the tank?
Standard 75 Gal holding tank on the fish only system.
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