Alright cool, thanks for the reply :)
Any idea about the exploding creeper problem..? My MobGrief is false, but whenever my Grinder kills a creeper, has a chance of exploding and knocking off my piping..
Finally got my mob farm/power source going, using the Reactant engine and I found one problem with creepers entering my grinder. A creeper sometimes "explode" and actually damage blocks around it (knocked off my piping and glass).
I finally got it..but the thing is..I was "tilling" grass as in, turning them into Farmland...
Then suddenly, I was "tilling" grass into..and I was like.......what?
EDIT: It's because of that bloody water source, turning them into farmland.. = =