To post photos, first, you will need to upload your photos to your Gallery on this website or to a photo hosting website like Photobucket, Flickr, etc...
-Open up the Reply window to the thread you want to post them in.
-Open a separate internet browser window and go to the site where your photos are posted.
-Usually below the photo, you will find some URL links or codes. Look for the one that begins with [IMG] or sometimes it may be listed as "BB Code". Highlight and copy this entire code then paste it in your "Reply" window.
-Click on the "Preview Post" button to see if the photo becomes visible. If it does click "Submit Reply". If not, then double check that you copied the right code or the entire code. The end of the code should be [/IMG]...
Here is a link to a video tutorial also. Hope this helps...
http://ball-pythons.net/forums/showthread.php?t=32416
Something that you did not mention was what size rats are being offered. I've noticed that with some adult Ball Pythons, eventhough they are large enough to take larger rats, some will not. They can be timid about it at best, and some just refuse them. I have found that the size that consistently works best are rats in the 70-90 gram range. Depending on where you get your feeders, this could be classified as a larger "Small Rat" or a smaller "Medium Rat". I always take a digital scale to the store with me to weigh my feeders.
I would not change tanks just yet. If your 75 gal tank is the same as mine, then the floor should measure about 4ft long X 18in wide. That should be plenty of floor space for a 53in long BP.
Some things that I would recommend changing are:
-Hides. You should have two identical snug hides. One for each end. For a larger snake like yours, I recommend these:
http://www.reptilebasics.com/large-hide-box
or these
http://npicages.com/abs_plastic_hide_boxes.html
I don't really like the half logs, because sometimes they don't provide enough security, and once they get urine or feces on them, they are nearly impossible to clean and disinfect. The plastic ones will give your snake a dark, snug place to hide and are easy to maintain. I use the Reptile Basics hides.
Since your snake is nocturnal, you really don't need UVB lighting. If you need them for supplemental heating, then you can use the red heat bulbs or a ceramic heat emitter for both day and night.
I would start with providing snug hides and a good prey size. Sometimes, adding some fake vines around the tank can add clutter and help fill in some of the open space. It is best to use hot glue to mount these around the sides of the tank, instead of the little suction hooks that come with them. Most pet stores will carry some of these or you can usually find them cheaper at hobby and craft stores like Michaels.