When you did a drain/fill did you happen to mark the bottles or notice how much got dispensed? The bottles dispense within an hour after a drain/fill, I think it’s usually actually around/within 15 minutes. Just mark the current level on the sticker of the bottle with a marker, then after drain/fill wait about 30 mins and check and you should see a new spot to mark on 3,4,5.
One thing you can always do is drain/fill with new water to “retry” that process, in case not enough of the fluid made it through the lines and into the water, this almost always happens at first after starting a new grow. But make sure to use new water and not the same water unless you’re sure none of the bottles dispensed into it.
why does water and room temp matter, im having this same issue rn
The water type matters because some tap water can be fine for humans but not good for plants, but it depends on where you live and how your water is delivered. It’s recommended to use distilled or RO water in order to only add what we want to the water and that way we know exactly what is in it.
The room temperature matters because the water temperature is directly related to it. We can’t let the water temperature get too warm or it will cause problems, although adding hydroguard to your water when you drain/fill will give you some slack there and let you run the water a bit warmer than without. It’s cheap to pick up an aquarium thermometer and just keep an eye on the water temp if you’re not sure what it is. I used a digital meat thermometer that I already had to check on that before I got the aquarium thermometer.
If you pop that little square trap door off of the bottom/back of the unit (and optionally direct a fan in that direction) it might help to reduce the reservoir temperature a bit if you find it’s a problem.
Simplest thing to do is just pick up a bit of hydroguard. You can get the smallest bottle it doesn’t take much.