It's been hard for me to judge coz I had a 75watt led light for vegging and the temps were around 20 and 23 degrees Celsius . Now during the day they are 28 with the fans running so that's using more water too it's coz I got a 250 watt light the temp flew up even tho it's a CFL lolIf it's heavy don't add anymore water. Ur plants will tell u when they thirsty look for the no life energy symptoms almost like it's going to flip over no life. But the pot thing is handy as my plants drink like 1 L of water now everyday. Since flowering but I know the weights now and the look they give when they dehydrated