What am I missing?

davito

New Member
View Badges
Joined
Feb 2, 2026
Messages
23
Reaction score
11
Rating - 0%
0   0   0
Hello again!
My 108 Fiji cube is about 6 months old. I've been trying since month 2 or 3 (after everything has cycled) to transfer over my corals from my well established biocube to break down to only one tank.

I pick frags from a mother colony of birdsnest in the biocube. They seem sorta okay at first and then slowly through the weeks the skeleton turns white, I can see through the polyps and eventually I'm left with nothing. Tissue seems to slowly rot away and I can't figure out why.

My temp is 79 F
Salinity 1.024 (trying to raise ever so slightly)
Alk is 8.5
Nitrate is 5-10 ppm
Phosphate rides around .03 maybe .05
Ph 8.2

Lights are reefi uno lights set to default sps setting.

My Kenya tree, mushroom, and cabbage coral all seem to be surviving maybe even thriving.

I'll attach pics of the one currently in the cube and the mother colony in the biocube

20260505_131752.jpg 20260505_132037.jpg 20260505_132028.jpg 20260505_133545.jpg 20260505_133541.jpg
 
OP
OP
D

davito

New Member
View Badges
Joined
Feb 2, 2026
Messages
23
Reaction score
11
Rating - 0%
0   0   0
I am also curious if maybe it's my flow? I have two mp40s that run anywhere from 1500 to 2800gph each. And a vectra m2 running full power
 

Gumbies R Us

God, Bouldering, and Reefing
View Badges
Joined
Nov 10, 2022
Messages
28,984
Reaction score
51,383
Location
North Georgia
Rating - 0%
0   0   0

Rocks reef

Rockin' the Reef
View Badges
Joined
Aug 14, 2017
Messages
11,365
Reaction score
66,281
Location
Michigan
Rating - 100%
4   0   0
Are you running carbon on the new tank that you are trying to establish the birds nest in? You mention all you have in there are soft corals/leather correct?
 
OP
OP
D

davito

New Member
View Badges
Joined
Feb 2, 2026
Messages
23
Reaction score
11
Rating - 0%
0   0   0
Are you running carbon on the new tank that you are trying to establish the birds nest in? You mention all you have in there are soft corals/leather correct?
I was running cabon initially but haven't for about a month now. And yes only others are softies
 

BryanM

7500 Club Member
View Badges
Joined
Jun 27, 2024
Messages
7,697
Reaction score
9,433
Location
Morgan Hill
Rating - 100%
1   0   0
If you can see the polyps moving around due to flow, I would generally guess your flow is adequate.

Have you done an ICP test? There may be some other trace imbalance that might be affecting it.
 
OP
OP
D

davito

New Member
View Badges
Joined
Feb 2, 2026
Messages
23
Reaction score
11
Rating - 0%
0   0   0
If you can see the polyps moving around due to flow, I would generally guess your flow is adequate.

Have you done an ICP test? There may be some other trace imbalance that might be affecting it.
I don't worry so much that I have inadequate flow, I'm curious maybe I have too much flow? I'm not blasting it directly by any means but total gph at times is probably 5-6k given the mp40s and return on a 108 display.

I haven't ran an icp no. I've considered it but haven't gotten there yet
 

REEFRIED!

Well-Known Member
View Badges
Joined
Nov 30, 2022
Messages
617
Reaction score
546
Location
Boston
Rating - 0%
0   0   0
Your parameters seem fine. If you suspect flow then turn the flow down a bit. Are you positive that you have enough light in the new tank?

Did the new tank start with dry rock?
 

Troylee

all about the diy!!!!!
View Badges
Joined
Jan 15, 2010
Messages
22,206
Reaction score
23,366
Location
Vegas baby!!!!
Rating - 0%
0   0   0
What percentage are your lights on? Reefi is a par beast and can cook stuff cause the spread isn’t that great. Also what reflectors are you running?
 
OP
OP
D

davito

New Member
View Badges
Joined
Feb 2, 2026
Messages
23
Reaction score
11
Rating - 0%
0   0   0
Your parameters seem fine. If you suspect flow then turn the flow down a bit. Are you positive that you have enough light in the new tank?

Did the new tank start with dry rock?
It was "dead live rock" that I allowed to cure and then I seeded with rock from my biocube and went from there.

I'm thinking the light is strong enough. I'll have to either purchase or rent a PAR meter to be certain but they for sure seem more powerful than my biocube stock lid
 
OP
OP
D

davito

New Member
View Badges
Joined
Feb 2, 2026
Messages
23
Reaction score
11
Rating - 0%
0   0   0
What percentage are your lights on? Reefi is a par beast and can cook stuff cause the spread isn’t that great. Also what reflectors are you running?
I would have to check again to see the exact percentage. I do have it set though to default sps settings with a twinge of extra blues for tank viewing in the evening.

I actually don't think I have any reflectors on 😬
 

Troylee

all about the diy!!!!!
View Badges
Joined
Jan 15, 2010
Messages
22,206
Reaction score
23,366
Location
Vegas baby!!!!
Rating - 0%
0   0   0
I would have to check again to see the exact percentage. I do have it set though to default sps settings with a twinge of extra blues for tank viewing in the evening.

I actually don't think I have any reflectors on 😬
So most likely it the reflectors that come standard which are 90° that’s high par and low spread.
 

Rocks reef

Rockin' the Reef
View Badges
Joined
Aug 14, 2017
Messages
11,365
Reaction score
66,281
Location
Michigan
Rating - 100%
4   0   0
I don't worry so much that I have inadequate flow, I'm curious maybe I have too much flow? I'm not blasting it directly by any means but total gph at times is probably 5-6k given the mp40s and return on a 108 display.

I haven't ran an icp no. I've considered it but haven't gotten there yet
Really don't think it's too much flow as you have soft corals in there that you stated are doing fine.
My euphyllia and softies get "sps" tank flow. Flow is just as important as light is, maybe even more so!
 

Rocks reef

Rockin' the Reef
View Badges
Joined
Aug 14, 2017
Messages
11,365
Reaction score
66,281
Location
Michigan
Rating - 100%
4   0   0
So most likely it the reflectors that come standard which are 90° that’s high par and low spread.
Good point, most softies thrive in 500+ PAR as they come from shallow water. The birdsnest may be getting blasted and can't survive.
 

Freenow54

5000 Club Member
View Badges
Joined
Mar 5, 2021
Messages
6,576
Reaction score
5,098
Location
Ontario Canada
Rating - 0%
0   0   0
Hello again!
My 108 Fiji cube is about 6 months old. I've been trying since month 2 or 3 (after everything has cycled) to transfer over my corals from my well established biocube to break down to only one tank.

I pick frags from a mother colony of birdsnest in the biocube. They seem sorta okay at first and then slowly through the weeks the skeleton turns white, I can see through the polyps and eventually I'm left with nothing. Tissue seems to slowly rot away and I can't figure out why.

My temp is 79 F
Salinity 1.024 (trying to raise ever so slightly)
Alk is 8.5
Nitrate is 5-10 ppm
Phosphate rides around .03 maybe .05
Ph 8.2

Lights are reefi uno lights set to default sps setting.

My Kenya tree, mushroom, and cabbage coral all seem to be surviving maybe even thriving.

I'll attach pics of the one currently in the cube and the mother colony in the biocube

20260505_131752.jpg 20260505_132037.jpg 20260505_132028.jpg 20260505_133545.jpg 20260505_133541.jpg
I have the exact same problem. Have tried dosing diffeent things nope > I am going to try adding another light to fill the middle hole . I want to see someone solve this really mentally breaking situation. Actually physical parts but cant say that here😇
 
OP
OP
D

davito

New Member
View Badges
Joined
Feb 2, 2026
Messages
23
Reaction score
11
Rating - 0%
0   0   0
Good point, most softies thrive in 500+ PAR as they come from shallow water. The birdsnest may be getting blasted and can't survive.
To your other point above, if it's allelopathay how does one battle that?

As the par itself goes I can definitely look into other reflectors, or I could also try turning the light down as well.
 
OP
OP
D

davito

New Member
View Badges
Joined
Feb 2, 2026
Messages
23
Reaction score
11
Rating - 0%
0   0   0
So most likely it the reflectors that come standard which are 90° that’s high par and low spread.
Looks like from what I can see they no longer make a reflector with greater spread for the older model. I'm assuming best bet then would be to dim the lights?
 

Troylee

all about the diy!!!!!
View Badges
Joined
Jan 15, 2010
Messages
22,206
Reaction score
23,366
Location
Vegas baby!!!!
Rating - 0%
0   0   0
Looks like from what I can see they no longer make a reflector with greater spread for the older model. I'm assuming best bet then would be to dim the lights?
Any idea what you par is? Are these 2.0 or 2.1?
 

TOP 10 Trending Threads

WHAT AMOUNT OF LIVE ROCK AND SAND SHOULD BE PRIORITIZED FOR OPTIMAL BIODIVERSITY/FILTRATION?

  • 100% live rock + bagged sand

    Votes: 38 27.3%
  • 100% dry rock + 100% live sand

    Votes: 47 33.8%
  • 50/50 live/dry rock, 50/50 live/bagged sand

    Votes: 30 21.6%
  • 75% live rock, 25% live sand

    Votes: 14 10.1%
  • 25% live rock, 75% live sand

    Votes: 10 7.2%
Back
Top