For me hor.. Cactus.. is depend on what type of cactus and which type of soil you have.. example, cactus that bought from supermarket or what everplace.. the soil that they are using is kind of water absorber... mean they only need to "rendam" the cactus pot into the water and make the whole soil wet and then it can "tahan" for a week. but those type of soil you can't use it in long term.. coz if you let it dry.. they'll stick together and if you just sprinker some water only... the water will dry up before absorb into the soil.. so i suggest just use the normal kampung soil~( i everytime will wash up all the soil after i bought from a shop and use my own soil ) but anyway.. sunlight is a must lar cactus that bought from cameron maybe you can maybe use a piece of glass and put a piece of netting on it to prevent strong sunlight and water. me myself i use aquarium (put down the aquarium (top face front))