Lobster Tank Cracked Fix Needed

I recently purchased a used 100 lobster tank. The 1in mpt fitting I used to replace the old one caused the 1in hole to crack the acrylic bottom about 3 seperate cracks only 4in out from the hole. I also cracked the threaded blocks attached on the top and bottom of the acrylic .Did anyone ever repair cracked acrylic? Tap a 1in thread into acrylic? I read of epoxys and extruded welding.
I just had my uncle service the compressor with freon r-12. I just had everything fixed with no leaks then a big explosion of a noise. CRACK. I could really use some help.
 
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