A 20 long will net you much more surface area but I would not keep more than 5 in there. When I give this number I assume you understand that keeping track of who eats what, cleaning more often and providing more hides, substrate, etc is a MUST. With fitting this number in the tank, using at least 4" + of substrate is good place to start.
To give you my opinion, 2 - 3 tigers seem to a great number. Trying to fit the max number you can into a tank can cause problems. Tigers are VERY personal (for salamanders) and only a couple will put a smile on your face. Some people keep one in a 55 gallon, some people have success keeping several in a ten gallon. It comes down to how well you can provide for the tigers.
As far as the drainage depth, using like an inch should work good. You can use anything that will allow water to drain. Just make sure it isn't sharp or is blocked with fine fiberglass netting or something like that. They can't be allowed to burrow down in this layer (as you already know).
Hope this helps and enjoy!
To give you my opinion, 2 - 3 tigers seem to a great number. Trying to fit the max number you can into a tank can cause problems. Tigers are VERY personal (for salamanders) and only a couple will put a smile on your face. Some people keep one in a 55 gallon, some people have success keeping several in a ten gallon. It comes down to how well you can provide for the tigers.
As far as the drainage depth, using like an inch should work good. You can use anything that will allow water to drain. Just make sure it isn't sharp or is blocked with fine fiberglass netting or something like that. They can't be allowed to burrow down in this layer (as you already know).
Hope this helps and enjoy!
gar man;3035232; said:
