Adding chromis to a 75g tank

[doog]

Hi, newbie here. I've got a 4 month old 75g tank c 20g sump, 110 lbs live rock, 2 fire shrimp, 8 snails (turbos, cerith, and a cowrie), 2 hermits, and now a lawnmower blenny just out of quarantine. ammonia, no2, no3 are all 0. Still have brown algae, but its decreasing and the coralline algea is begining to layer on a couple rocks.

i'd like to add blue chromis. my thinking is they're colorful and active, and sound like they're pretty durable and a good beginner fish. I'll plan on quarantining them for at least a few weeks. My questions are - (1) how many should do well in a 75g setup, (2) how do you do quarantine with a group of, i'm guessing, 5 or so fish, (3) how do you feed these fish - my shrimps eat out of my hand when i feed nori or flakes to supplement algae?

TIA- any additional advice is greatly appreciated!

[missionsix66]

Originally Posted by doog

Hi, newbie here. I've got a 4 month old 75g tank c 20g sump, 110 lbs live rock, 2 fire shrimp, 8 snails (turbos, cerith, and a cowrie), 2 hermits, and now a lawnmower blenny just out of quarantine. ammonia, no2, no3 are all 0. Still have brown algae, but its decreasing and the coralline algea is begining to layer on a couple rocks.

i'd like to add blue chromis. my thinking is they're colorful and active, and sound like they're pretty durable and a good beginner fish. I'll plan on quarantining them for at least a few weeks. My questions are - (1) how many should do well in a 75g setup, (2) how do you do quarantine with a group of, i'm guessing, 5 or so fish, (3) how do you feed these fish - my shrimps eat out of my hand when i feed nori or flakes to supplement algae?

TIA- any additional advice is greatly appreciated!

5 sounds like a good number. Maybe a couple more depending on future stocking plans.
Quarantining a group of fish, I'm not sure. I didn't quarantine my group of chromis.
Feeding is easy. Very voracious eaters.
Don't just let your LFS just scoop 5 of these chromis for you. Carefully select them. Skinnier ones will die from competition during feeding. Like I said they are voracious feeders and are the first to assume it's feeding time. Sucked one through my siphon tube during a water change. Thought I was about to throw some food in. IMO these are the least hardy of the damsel group. But, the best ,as far as, compatibility with other fish. They never bother anyone in tank.

[wildreef]

well every one would agree that 1 inch of fish per 5 gallons of water but green /blue chromis is not a very big fish ( keep in mind they can grow and fatten up to bout 3 inches )
I my self have push this to near 1 inch of fish per 10 gallons.

If you want blue's I would suggest putting them in last , they are little war mongers.
and will establish a territory real quick and any thing added after that will have a hard time finding it's own space.
Blue meaning (dark blue)

*Mission* up there provided a pic which i usealy call a green chromis and they are the easier of all the damsels and don't carry on a territory war like the other of the damsels.

[doog]

wildreef and mission, thanks for the help. i thought that chromis were unique to the damselfish group and much less aggressive/territorial? are blue chromis less problem than blue damsels, or should i think about just putting in green chromis?

again, tia.

[missionsix66]

I though you were referring to green chromis from the beginning. Don't know about the blues. Green chromis is very compatible in a community reef.

[luvreefs23]

Ive had a few of these guys, never a problem with them picking on any of the other fish in the reef.