Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
If the return pump is strong, you can try adding maybe a ball valve to fine tune it.
For the temp, get a second thermometer to help you verify and calibrate the temp. Use something like a stem model, preferably digital
I will say that not all Petco's are created equal, for example the one in Union Square in Nyc has a full blown frag tank with acros and what not, plus a very nice livestock....but the one in linden by me totally sux
Good luck with the new gig doc