I have a handheld Python siphon w the bulb starter. I usually vacuum up all the waste, then wipe the sides of the tank down w a paper down while it’s still draining. I wipe the tank down every night given I feed BH multiple times a day (always surprised at how much more waste wiping will find).
I start the pump to fill the tank from my aging barrel when the heater is just about to be uncovered. I continue to run the siphon in the opposite corner so I’m getting near that 100% change. I add safe to my barrel as I’m doing the siphoning. (With adult fish I add it just to the tank to keep the aging barrel cleaner, but I haven’t wanted to do that w such young fish. This means I clean the barrel once a week.)
I squeeze the filter out once a week. Quite a bit of waste gets trapped under the filter as it sits on the bottom. The better option is probably the sponge w the higher base that I believe Pat has in her pics. I also have a few of the sponges that auctions to the sides (In Sanjays tanks I think) but I just didn’t have a cycled one when they first arrived.