I use Dynagro Protekt to help curb high temps ( Cali weather ) , sometimes it pushed 88 degrees in tent so had to work fast. This is cheaper alternative to Rhino Skin and others but ( it will spike your ph ! ) .
Protekt will allow plants to tolerate some temp mishaps and help keep some pest issues away , but a little PH down will get you in the proper PH.
Example : I started with RO water @ 4.4 ph test gallon , one half ( start small ) tsp per gallon , rechecked it went to 9.0 PH ( it is very strong ) so I had to use ph down a little at a time to bring at 6.8 . Dynagro Protekt CAN be used as Foliar ( during veg ) or into soil.
Just make sure you put in water FIRST , so you can blend well.