Stock vs. Rock - is it too much?

Salt.E.Clam

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Hello everyone,

I currently have a 180g DT that is 6'x2'x2' with dual overflows to a 60-80g sump with a refugium on one end and an octoreef 170ss skimmer on the other end.

The tank has been set up 7 months (May 2025) using some rock and sand from an established tank. Most of it was old rock I've had sitting around for years. Copepods were introduced at maybe 2 months and are still thriving on the rocks and glass but i know i will have to add more. I have some corals, CUC, Collonista snails galore, some berghia to knock down the aptasia starting to take over, etc. There was a snowflake eel in there but I sold him.

Anywho, I'm in the process of building a stock list and I think I have something achievable with my tank size, but I'm almost worried I have too much rock. Do I need to remove some to allow this stock list to flourish, or does having my setup of caves and overhangs support everyone?

The stock would be introduced in an appropriate sequence to allow the less dominate to establish adequate territories. I'm aware of the behavior of most of these to an extent, but welcome some feedback and alternatives.

But, I'm primarily concerned with if I have too much rock, especially as I add more coral and sand inhabitants...some of these species get big.... the Yellow Belly Regal Blue Tang can get to 12"!!



Common NameQuantity
Yellow Tang - Hawaii
1
Yellow Belly Regal Blue Tang
1
Yellow Pyramid Butterflyfish
1
Magnificent Foxface
1
Lamarck's Angelfish
3
Coral Beauty Angelfish
1
Blackfoot Clownfish
2 (Pair)
Green Chromis
10
Bartlett's Anthias
6 (All Females)
Blue Jaw Tilefish
1
Blue Throat Fairy Wrasse
1 (Male)
Scott's Fairy Wrasse
1
Purple Firefish
1
Green Mandarin
1
Longnose Hawkfish
1
Diamond Watchman Goby
1
Yasha White Ray Shrimp Goby
1
Sailfin/Algae Blenny
1
Yellowtail Black Blenny
1
Astraea Turbo Snail
15–20
Nassarius Snail
20–30
Cerith Snail
15–20
Banded Trochus Snail
10–15
Red Tuxedo Urchin
1
Scarlet Skunk Cleaner Shrimp
2
Blood Red Fire Shrimp
1
Peppermint Shrimp
3–5
Snapping Shrimp, Red Banded
1
Dwarf Red Tip Hermit Crab
20–30
Emerald Crab
2–3
Pom Pom Crab
2–3
Tile Sea Star, Orange/Red
1

Thoughts?

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Display looks great. I don’t see tooo much rock. Caves add security and remove stress.

One comment is that with large angels & butterfly’s, your corals will be on the grazing menu.

Why will you have to add copepods, if they are already established in your live rock?
 
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You don't have anywhere near too much rock. It is fine, I would even add more. Your tank is larger than mine but I have a lot more fish and more rock. Most of my fish are smaller than yours but your smaller fish will appreciate that rock and you have plenty of open space for the tangs.

 
Hello everyone,

I currently have a 180g DT that is 6'x2'x2' with dual overflows to a 60-80g sump with a refugium on one end and an octoreef 170ss skimmer on the other end.

The tank has been set up 7 months (May 2025) using some rock and sand from an established tank. Most of it was old rock I've had sitting around for years. Copepods were introduced at maybe 2 months and are still thriving on the rocks and glass but i know i will have to add more. I have some corals, CUC, Collonista snails galore, some berghia to knock down the aptasia starting to take over, etc. There was a snowflake eel in there but I sold him.

Anywho, I'm in the process of building a stock list and I think I have something achievable with my tank size, but I'm almost worried I have too much rock. Do I need to remove some to allow this stock list to flourish, or does having my setup of caves and overhangs support everyone?

The stock would be introduced in an appropriate sequence to allow the less dominate to establish adequate territories. I'm aware of the behavior of most of these to an extent, but welcome some feedback and alternatives.

But, I'm primarily concerned with if I have too much rock, especially as I add more coral and sand inhabitants...some of these species get big.... the Yellow Belly Regal Blue Tang can get to 12"!!



Common NameQuantity
Yellow Tang - Hawaii
1
Yellow Belly Regal Blue Tang
1
Yellow Pyramid Butterflyfish
1
Magnificent Foxface
1
Lamarck's Angelfish
3
Coral Beauty Angelfish
1
Blackfoot Clownfish
2 (Pair)
Green Chromis
10
Bartlett's Anthias
6 (All Females)
Blue Jaw Tilefish
1
Blue Throat Fairy Wrasse
1 (Male)
Scott's Fairy Wrasse
1
Purple Firefish
1
Green Mandarin
1
Longnose Hawkfish
1
Diamond Watchman Goby
1
Yasha White Ray Shrimp Goby
1
Sailfin/Algae Blenny
1
Yellowtail Black Blenny
1
Astraea Turbo Snail
15–20
Nassarius Snail
20–30
Cerith Snail
15–20
Banded Trochus Snail
10–15
Red Tuxedo Urchin
1
Scarlet Skunk Cleaner Shrimp
2
Blood Red Fire Shrimp
1
Peppermint Shrimp
3–5
Snapping Shrimp, Red Banded
1
Dwarf Red Tip Hermit Crab
20–30
Emerald Crab
2–3
Pom Pom Crab
2–3
Tile Sea Star, Orange/Red
1

Thoughts?

20251208_173418.jpg


20251208_173623.jpg

20251208_173630.jpg
20251208_173642.jpg
20251208_173615.jpg
20251208_173551.jpg
20251208_173600.jpg
I’m no expert, but I think your golden. In my experience, fish love hiding places, and I think it’s highly overlooked. Fangs are agile and can still zip along the front glass or possibly the back, while the rocks break lines of sight which should lower aggression. Let me know how you get on. I’ve a 4 tf tank that is heavily set up with rocks like this aswell, but I will just have one tang; a whitetail bristletooth, so I’d like to see how you get on. Have a look at my build thread if you like
 
Rock looks fine! You have plenty of swimming areas plus hiding spots for your fish!
 
Display looks great. I don’t see tooo much rock. Caves add security and remove stress.

One comment is that with large angels & butterfly’s, your corals will be on the grazing menu.

Why will you have to add copepods, if they are already established in your live rock?
Thank you.

Noted with the angels and butterfly's. I think These are on the less risky side for nipping, no? Do you have any suggestions?

As for the copepods, I'll have to watch them once i introduce the mandarin(s), to ensure the copepods population stays sufficient. From what ive read, they are quiet the voracious eater. I have some rock in my refugium to help keep the copepods around longer too.
 
You don't have anywhere near too much rock. It is fine, I would even add more. Your tank is larger than mine but I have a lot more fish and more rock. Most of my fish are smaller than yours but your smaller fish will appreciate that rock and you have plenty of open space for the tangs.

Thank you @Paul B . Your tank looks beautiful!
 
Thank you.

Noted with the angels and butterfly's. I think These are on the less risky side for nipping, no? Do you have any suggestions?

As for the copepods, I'll have to watch them once i introduce the mandarin(s), to ensure the copepods population stays sufficient. From what ive read, they are quiet the voracious eater. I have some rock in my refugium to help keep the copepods around longer too.
If you are feeding your system, the copepods in your refugium are a sustainable zooplankton reactor.

What else is in your refugium?

I can’t help you with those fish’s social behavior. Each has its own personality. I have not kept large angels or butterfly’s. Drawf angels are the devil in disguise as far as coral is concerned. Pygmy angels are shy and friendly to corals.
 
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I’m no expert, but I think your golden. In my experience, fish love hiding places, and I think it’s highly overlooked. Fangs are agile and can still zip along the front glass or possibly the back, while the rocks break lines of sight which should lower aggression. Let me know how you get on. I’ve a 4 tf tank that is heavily set up with rocks like this aswell, but I will just have one tang; a whitetail bristletooth, so I’d like to see how you get on. Have a look at my build thread if you like
I will definitely check it out! Thank you for the insight!
 
If you are feeding your system, the copepods in your refugium are a sustainable zooplankton reactor.

What else is in your refugium?

I can’t help you with those fish’s social behavior. Each has its own personality. I have not kept large angels or butterfly’s. Drawf angels are the devil in disguise as far as coral is concerned. Pygmy angels are shy and friendly to corals.
Only thing in the refugium is chaeto and some LR that came from the DT. No fish. There are snails thay have made their way down there too. Astrea, trochus, Collonista.



Now, I used to dose phytoplankton for them, but haven't in probably 3 months. Doesn't seem to impact the population.
 
I would ditch the Hermit Crabs. I consider them more like Pests as mine would bother my Snails constantly. Your shrimp are a good substitute. Also, for your fish QT is a must and BTW, nice looking Tank.
 
I would ditch the Hermit Crabs. I consider them more like Pests as mine would bother my Snails constantly. Your shrimp are a good substitute. Also, for your fish QT is a must and BTW, nice looking Tank.
Agree on the hermits. The ones I have now do nothing but kill. Hardly the grazer herbivores they are sold as.

Building my QT station now 😁
 

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