it was a couple months ago, i would say give it another 6-8 months for it to come back. the only thing that stinks is that they put restrictions on the sizes. i think the last one was like 10s, 15s, 20s, and maybe 30s
last time / last fall was different in different stores. Also even if a certain store was only going up to 20 gallons not every employee knew that. So some people got bigger tanks than were included in the sale.
Prevous to that I believe all stores had included regular tanks like AGA regular rectangle tanks but no AIO or bow fronts.