Folks, if you've recently upgraded or renewed your annual club membership but it's still not active, please reach out to the BOD or a moderator. The PayPal system has a slight bug which it doesn't allow it to activate the account on it's own.
Don't worry about it, if your tests show zero now aim to do very frequent water changes to keep everything steady and at the same time do your hypo. It will all work out. Any buildup should be diluted on almost daily basis with water changes(I do it that way in QT with 1G a day life is easy).
Generally no you don't have to bend over backwards to be there to let them in, but they may be allowed to come in if you are not there. Realtors will abuse you if you let them, you are not the one selling the house so they need to accommodate you.
If you are doing it right try to make sure your fish are free of all diseases...use this opportunity to do make the tank a hypo-salinity to kill any ick. Then bring the tank up to regular salinity. Let it stabilize and then bring in a BTA....maybe for Christmas or something.
Another choice that I thought about doing once upon a time was a custom tank ...saw one that was 5-7 gallons maybe...was about 12-18 inches long but only 6x6 ish wide...person had pipe fish in it I believe. Been a long time there are some other nano boards do you go on them?
A 10 gallon tank is going to be an easy/cheap choice,12 inch T5 will work nicely, or a smaller cube. I looked at all the Fluval tanks for my son and unmothballed my 24G AP because I just wasn't saving anything. It was cheaper to retrofit the hood than to buy a whole new setup. I know this is...