Help getting slime ****

[quote user="barneykiller187"]

I cant get any slimes to spawn in my gigantic slimefarm HELP!!!!

[/quote] Are you sure your slime farm is in a slime spawning chunk. you can find out by entering your world seed into the slime finding tool

http://extension.ws/minecraft/slimes.html

I used it and now have a nice 16*16 slime farm and have killed over 300 slimes

You asked about lava. Lava will kill a slime if it jumps into it so avoid the lava. As well, big slimes will die if hit with a diamond sword and not make littler slimes. Hit them with wooden tools to get them to split and make smaller slimes which can then
be hit to make smaller ones until you get the smallest and get a slime ball.

I cant get any slimes to spawn in my gigantic slimefarm HELP!!!!

Slimes can spawn at any light level, you should add torches to your slime farm so other mobs don't spawn. It will help your slime farm be more efficient.

does it have to be bedrock or can it be just above it like on level 8?