Well im back, i forgot about this thread as the tank has been sitting in my basement as i didnt have the money to get it running. But anyways, i tried vinegar/water mix (heard it worked for smells) it had no effect. Then i used that flex seal stuff as i had it laying around, still no effect.
I have no idea what the spill was from as when i picked it up the guy had it on his porch so i didnt know it smelled till i got it home in a closed area.
Anyways, i will try the kliz but is there anything else i could try as well?