There is no standard for watering. Environments, lights, nutes, strains, medium and pot sizes all differ from grow to grow and all play a roll in how much water a plant consumes. You water when the plant tells you it needs water.
Look into Water holding capacity water holding capacity is the amount of water that a given soil can hold for crop use. Field capacity is the point where the soil water holding capacity has reached its maximum for the entire field
so you can figure that out as a spectrum for each grow medium (clay soil, sandy loam,coco, etc.)...clay soil will have a higher water holding capacity, sandy loam soil or potting mixes will hold less, get it? Coco is very low on that as you can imagine. Look at what ur growing in, the texture. Then think 4gal pot of each will hold different amounts of water over time and bingo, you're a grower level 2, you get an award chest, click here to open.