[Boss]

I use it every watering at 1/2 tbsp gallon.

There is a way to get temps down, but it's kinda ..

Use large water catchers under your plants, large container lids lines with plastic sheeting work well. Fill them with water a bit on the cool side, and place the pots in the water. Place fans at water level and fill/feed the in the mornings. You should get 4-5 degrees if you are lucky and have good exhaust air. Place the plants on blocks so they will stop feeding when the water level goes down a bit.