I want to build a black and white darkroom at home. I don't know what the minimum range should be. What are the specific needs and how much do you need?

I use the smallest darkroom, about 6 square meters, which is where I used to live.

If you use a toilet, the quality may not be very good, because toilets are generally white tiles that reflect light, and darkrooms need black non-reflective walls for better magnification.

The darkroom needs hot water. If the water quality in your place is poor and the alkalinity is too high, you need a water filtering device.

The simplest equipment needs a magnifying glass and a lens magnifying ruler, a developing tank, a thermometer, a red light, a safety light and at least three developing disks.

Magnifier domestic second-hand hundreds can be done, but look at luck, if there is a lens on Taobao, hundreds of different focal lengths in China can be matched with negative filters of different sizes. Just use the home one. Dozens of thermometers are cheaper than alcohol. Taobao has dozens of domestic development disks, and there are also dozens. You can go to Taobao's "Lao Huang" store and compare everything. 3,000 yuan should be enough.