hey im new to this web site i have been interested in squid since i was four years old but any way i was wondering if a ten gallon tank would be big enough for 2 to 3 cuttle fish or will i have to get a bigger tank?
Even for dwarfs, 10 gallons is too small, though it might not be bad for hatching and raising babies, over just a short couple of months they will need much more space. We recommend at least a 30 gallon tank for an individual specimen. 55 and up for multiples. The dwarf cuttles can grow to around 4~5 inches.
They need lots of space to swim around, and even in bigger tanks, can sometimes frantically bump into things and injure themselves if startled. Also, they are very messy and between eating and using the bathroom, 10 gallons of water would get really gross really fast.
There's a lot of great information in this forum as well as the Articles
I usually try to keep out of these sorts of threads, but here goes:
A ten gallon saltwater/reef tank is almost impossible to keep for any length of time. Yes, it has been done. It has also ended up with the deaths of countless animals that would have thrived in a larger aquarium.
Saltwater animals are much more dependent on high water quality than are freshwater animals, who often live in muddy puddles. You can not replicate the purity of ocean water in a ten gallon aquarium unless you are constantly changing the water.
Cephalopods are far ranging creatures, and mentally need a good bit of room to keep from going stir crazy. Remember, when you keep an animal in a cage, you are essentially its jailer.
I tend to recommend a 50 gallon tank as the very smallest to keep a ceph in. A 125 is a much better proposition.
Used tanks have often been treated with copper, and you can not get rid of its influence on the water quality. To be safe, you should always purchase a new tank, or a tank from a dedicated reef keeper.
Sorry if this comes over as a rant, I do not mean it to be that way.