It looks like you got off to a good start with the manifold but something went drastically wrong. I don’t know biothrive or why epsom salt (magnesium sulfate) is added.
The soil looks bone dry. When the rh is low and temps are up you generally need to water more and more often. More is going on than low humidity.
Filling out this support ticket may help
Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (not applicable)
• What strain, Seed bank, or bag seed (photo or auto)
• Age of plant
• Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
• Vessels: Type and capacity of container (fabric, plastic, etc)
• PH and TDS (PPM or EC) of:
• Water,
• Solution,
• runoff (if Applicable)
• PPM/TDS or EC of nutrient solution if applicable
• Method used to measure PH and TDS
• Indoor or Outdoor if indoor, size of grow space
• Light system List brand and wattage/spectrum
• Actual wattage draw of lights
• Current Light Schedule
• Temps; Day, Night
• Humidity; Day, Night
• Ventilation system; Yes, No, Size
• AC, Humidifier, De-humidifier,
• Co2; Yes, No
If growing Hydro some additional questions:
-DWC? RDWC? Autopots? Ebb and Flow? Other?
-Distance of liquid below net pot (DWC)
-Temperature of reservoir
-TDS of nutrient solution
-Amount of air to solution
Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.