This little thing suddenly made tank day so much easier, ha.
In setting up my new tank, I figured I could run it half-full for a while using my spare 50 watt heater and several small sponge filters plus the extra corner box filter, while I save up again for a new Eheim canister - as I've now used all my hobby budget. I forgot how many other small essentials I'd need to buy for the setup, though. Here's a start (plus what gathered from under the other tank cabinets- the airline tubing, line splitters, air control valves, pvc pipe, clay caves, analog timer): an air pump (my spare is in use on the QT tank), 250 watt heater, large siphon vacuum, longer-handled fish net, check valve, glass thermometer. I've ordered a GFCI power strip. Getting ready!