No problem bro. To flush your plants, you should water them slowly and thoroughly using three or four times the size of the pot they are in. One gallon pot, 3-4 gallons of water. Also, I don't know if you have been using regular tap water, but if so, you should check the PH of the water too(PH/N-P-K Test Kit from above). If your plants have been doing well with the water you've been using I would say it's alright, just might want to check it anyway. Water should be room temperature. Another thing is you should let the soil dry out a bit between waterings. When the soil dries out, the plants roots go in search of water, spreading out and giving you a big root system. BIG roots = BIG buds. An easy, pretty foolproof way to know when to water is to stick your finger into the soil up to your second knuckle. If the soil is still damp that far down, wait a bit longer. As for your closet temps, what is above the closet? Is there an attic above it? If so, cut a hole, or a few holes, and put air conditioner vents over them. Since heat naturally rises, by cutting the holes, a lot of the heat will escape.