you could just go to the pet shop and get a chemical test for $5. i would repot with soil with lime added as soon as possible. once you test the ph of course!! although i'm sure peat without lime will have a way to low ph for mj. check 1st though, you never know. i just reread your 1st post and noticed you said the medium also had potting mix. i misread it before and thought it was just peat and perlite. i will still stick by the ph issue though. i have NEVER had any success without use of lime at 1-2 tbsp per gal.