Use your hand, I usually use a deep plastic container and some coaxing You will most likely need to empty large decor items out.
You may need 3 or more 20G for all the fry. You will if you raise all the eggs laid!
I use 3, 2x1 ft, bare set up, for corydoras. Plastic storage containers are ideal because you can stack them away.
L030 are nice. Soft water essential, see, my fish house, on YouTube, 4tanks2day.