carpenter should be ok.
With tangs the minimum reccomended for most is 75g, might not seem like much more then what you've got but keep in mind the redsea is an all in one so the total volume includes the filter area, true display space is probably closer to 55g volume.
Tang chart off of RC.
[TABLE="align: center"]
[TR]
[TD]
Min Volume
[/TD]
[TD]
Min Length
[/TD]
[/TR]
[TR]
[TD]
Species
[/TD]
[TD]
Common Name
[/TD]
[TD]
(gallons)
[/TD]
[TD]
(feet)
[/TD]
[/TR]
[TR]
[TD]
Acanthurus achilles[SUP]1[/SUP]
[/TD]
[TD]
Achilles Surgeonfish
[/TD]
[TD]
180
[/TD]
[TD]
6
[/TD]
[/TR]
[TR]
[TD]
Acanthurus coeruleus
[/TD]
[TD]
Atlantic Blue Tang
[/TD]
[TD]
125
[/TD]
[TD]
6
[/TD]
[/TR]
[TR]
[TD]
Acanthurus japonicus
[/TD]
[TD]
Powder Brown Tang
[/TD]
[TD]
125
[/TD]
[TD]
6
[/TD]
[/TR]
[TR]
[TD]
Acanthurus leucosternon[SUP]2[/SUP]
[/TD]
[TD]
Powder Blue Tang
[/TD]
[TD]
125
[/TD]
[TD]
6
[/TD]
[/TR]
[TR]
[TD]
Acanthurus lineatus[SUP]2[/SUP]
[/TD]
[TD]
Lined or Clown Surgeonfish
[/TD]
[TD]
240
[/TD]
[TD]
8
[/TD]
[/TR]
[TR]
[TD]
Acanthurus nigricans
[/TD]
[TD]
Whitecheek Surgeonfish
[/TD]
[TD]
125
[/TD]
[TD]
6
[/TD]
[/TR]
[TR]
[TD]
Acanthurus olivaceus
[/TD]
[TD]
Orangeshoulder Surgeonfish
[/TD]
[TD]
180
[/TD]
[TD]
6
[/TD]
[/TR]
[TR]
[TD]
Acanthurus pyroferus
[/TD]
[TD]
Mimic Surgeonfish
[/TD]
[TD]
75
[/TD]
[TD]
4
[/TD]
[/TR]
[TR]
[TD]
Acanthurus sohal[SUP]2[/SUP]
[/TD]
[TD]
Sohal Surgeonfish
[/TD]
[TD]
350
[/TD]
[TD]
10
[/TD]
[/TR]
[TR]
[TD]
Acanthurus triostegus
[/TD]
[TD]
Convict Surgeonfish
[/TD]
[TD]
125
[/TD]
[TD]
6
[/TD]
[/TR]
[TR]
[TD]
Acanthurus tristis
[/TD]
[TD]
Indian Mimic Surgeonfish
[/TD]
[TD]
75
[/TD]
[TD]
4
[/TD]
[/TR]
[TR]
[TD]
Ctenochaetus hawaiiensis
[/TD]
[TD]
Chevron Tang
[/TD]
[TD]
100
[/TD]
[TD]
5
[/TD]
[/TR]
[TR]
[TD]
Ctenochaetus striatus
[/TD]
[TD]
Striated Bristletooth Tang
[/TD]
[TD]
75
[/TD]
[TD]
4
[/TD]
[/TR]
[TR]
[TD]
Ctenochaetus strigosus
[/TD]
[TD]
Kole's Tang
[/TD]
[TD]
75
[/TD]
[TD]
4
[/TD]
[/TR]
[TR]
[TD]
Ctenochaetus tominiensis
[/TD]
[TD]
Tomini Tang
[/TD]
[TD]
75
[/TD]
[TD]
4
[/TD]
[/TR]
[TR]
[TD]
Naso brevirostris
[/TD]
[TD]
Spotted Unicornfish
[/TD]
[TD]
350
[/TD]
[TD]
10
[/TD]
[/TR]
[TR]
[TD]
Naso lituratus
[/TD]
[TD]
Orangespine Unicornfish or Naso Tang
[/TD]
[TD]
240
[/TD]
[TD]
8
[/TD]
[/TR]
[TR]
[TD]
Naso unicornis
[/TD]
[TD]
Bluespine Unicornfish
[/TD]
[TD]
350
[/TD]
[TD]
10
[/TD]
[/TR]
[TR]
[TD]
Naso vlamingii
[/TD]
[TD]
Vlamingi Tang
[/TD]
[TD]
350
[/TD]
[TD]
10
[/TD]
[/TR]
[TR]
[TD]
Paracanthurus hepatus[SUP]3[/SUP]
[/TD]
[TD]
Pacific Blue or Regal or Hippo Tang
[/TD]
[TD]
240
[/TD]
[TD]
8
[/TD]
[/TR]
[TR]
[TD]
Zebrasoma desjardinii
[/TD]
[TD]
Indian Ocean or Red Sea Sailfin Tang
[/TD]
[TD]
240
[/TD]
[TD]
8
[/TD]
[/TR]
[TR]
[TD]
Zebrasoma flavescens
[/TD]
[TD]
Yellow Tang
[/TD]
[TD]
100
[/TD]
[TD]
5
[/TD]
[/TR]
[TR]
[TD]
Zebrasoma scopas
[/TD]
[TD]
Brown Tang
[/TD]
[TD]
75
[/TD]
[TD]
4
[/TD]
[/TR]
[TR]
[TD]
Zebrasoma veliferum
[/TD]
[TD]
Sailfin Tang
[/TD]
[TD]
240
[/TD]
[TD]
8
[/TD]
[/TR]
[TR]
[TD]
Zebrasoma xanthurum[SUP]2[/SUP]
[/TD]
[TD]
Purple Tang
[/TD]
[TD]
120
[/TD]
[TD]
5
[/TD]
[/TR]
[/TABLE]
[SUP]1[/SUP]
The Achilles Surgeonfish requires a very high flow level, and can pose even more health and feeding problems than other tangs.
[SUP]2[/SUP]
These species can be exceptionally aggressive, and require careful planning.
[SUP]3[/SUP]
These species are especially prone to infections, and should be watched very carefully in quarantine.