I have a 50 gallon aquarium with dimension 48"x13"x12" how many axies should i keep in there?
3 would be great, 4 at a push
What kind of filter should I get?
One rated at 200gal/hour - type is up to you and your budget, but I prefer cannisters
What are some good cheap ways to keep the aquarium below 70 degrees?
A fan blowing across the surface or ice bottles are cheap, a chiller is more reliable but expensive.
What should i feed my axies when i get them if they are 3"+ and how often?
Earthworms, bloodworms, blackworms, pellets, small live shrimp. At 3" they will take almost anything they can get in their mouth. Feed them daily, whatever they will eat in about 10-15 mins.
at what size should i change the diet and should i change the time period of feedings?
Wean them off the smaller worms onto earthworms as they grow. By the time they are fully grown at about a year old they will only need feeding once every other day or less often. Try and keep their belly as wide as their head.
Is play sand the best sand for a substrate or should i go with something different?
Stick with bare bottom until axies are 5-6", sand can cause impaction in smaller axies. Sand is good, bare bottom also good, large slates, silicone with sand embedded
Thanks in advance for all the advice, i am super excited to get my axolotls
Don't forget to cycle your tank before you get your axies - and good luck!