Well, the largest pet store in Davis is Petco and it's too tiny to carry filter media for Rena Filstars. So I just biked a couple miles in the rain for nothing. But, since I had to order stuff online anyway, I broke down and ordered a hood for the 40 gal. So it'll be another week or so until I can even think about setting up the 75 gallon. All you guys with bigger tanks that led me to buy this thing in the first place: it better be worth it.