Have to correct this thread a little. I was mistaken the $1 per gallon sale is store by store.
If your local Petco is doing a remodel they will have a grand re-opening. The $1 per gallon sale is part of it. The national sale hasn't happened yet.
I did pick up a 29 gallon tank today for $19 though because the first 100 customers get a free $10 gift card if you show them your rewards card as you walk in the door!!
Sorry for the confusion, but the remodels are an even better deal with the free stuff they give out!!!!