so soy, are you saying you got seeds in this plant, if this is the case then you either got a hermie or a male somewhere in the grow, if its a hermie than chances are the pollen is on all the plants, any slight movement of air will make the pollen air born,
let me know, if you have clearly got little green seeds then you have a hermie, get it out the room and if its near harvest harvest it, or grow it out till the seeds are ready and you should then have regular seeds, some get fem seeds from a hermie, i have read a hermie will give fem seeds, but i have been told the seeds will be regular,
but for now take that plant out the room very carefully, place a bin bag over it before taking it out the room, this should stop as much pollen as possible, it sounds like a hermie if you got seeds forming mate.
as for the watering, if you got a seedling in a 5gallon pot then it wont need watering that often, check the top inch and half and see if its dry, the roots wont be to long so you need to make sure the top of the soil gets watered, i usually water till i have some run off but not when i have a small plant in a big pot else it would be way to much water, id go by the top 2 inches of the pot, if their moist then the plant is ok, if its dry then water a small amount say a pint or something similar to make the soil moist, then as the plant gets bigger use more water,
the weigh method is what i use, i have the same size pot with the same soil in it and its bone dry, then i compare the weight by picking them up.