Ok, I'll do that... My LPS gets all fish shipments in on Wednesdays and Thursdays, so when I special order the fish thats when they should arrive. They say they order them up with all the rest of everything so its cheaper for them and the customer. So I might be able to order up some things over the phone but I don't know... My dads car just broke down out of no where yesterday and my mom said that first we have to see how much that is before buying anything else, which makes complete sense.If you add more ammonia it will make more nitrate, so do the water change shortly before going fish shopping - but leave enough time for the temperature to stabilise.
If it will be longer than 3 days, add just 1 ppm every 3rd day.