Thanks for the info.Looks like you've done great so far
Imo, if your entire stand is put together with Craig pocket hole screws, do yourself a favor go behind it and get some 3.5-in deck screws in there. Kreg are good for entry level DIY projects. I've seen hundreds of instances of failure with them though. A 1 lb box of screws will do you just fine. Piece of mind that if somebody accidentally hip checks your tank, it won't rack the frame and tumble to the ground.
I have those screws already so I’ll go back from the inside of the stand and throw them in a strategically.