I agree with Kaysie, dont try to raise more than you can, unless you have the time, money and space.
My Axie, Sylabub, laid her first eggs in May, but I couldn't stand the thought of letting nature take its course, so I separated all the eggs from the parents, not such a bright idea for a first timer. So I waited till they all hatched, 300 approx. Two weeks later Sylabub laid more. Oh no.
I have not got rid of any of them (natures way) but I have had to buy a lot of brine shrimp eggs (the local aquarium guy calls me now, the axolotl lady haha), salt, tanks, pumps, plants (this helps prevent fighting and gives them little hiding spaces) blood worm, prawns, water conditioner(dechlorinater), live blackworm, air hosing (metres), taps, turkey basters, etc. I now have approxiamately 20 tanks, containers going with the two separate hatchings. I have approx 55 of the first hatching and 80-100 of the second hatching.
It usually takes me 2 - 3 hours every day to clean the tanks and feed the baby axies and on the weekend I do a complete tank empty and clean which takes approx 4 to 5 hours. I also feed them twice a day.
I do need to say though, although it has been, as Kaysie said, expensive, I look forward to getting home from work and cleaning them as it is very relaxing and I am enjoying watching their development. Its been hard but worth it.