Sorry mate 16:00hrs my lights come on so I like to be out there to make sure things are all working and to make any adjustments to the EC and pH of the reservoir before the first feed at 16:30.
(Red) spider mites are nasty, they are sexually mature at a very early age and produce 100 eggs each time, 25 males and 75 females. Also our optimum conditions are their perfect condition to live.
I would recommend treating your garden 3 times, allowing a week between each treatment. The first treatment will kill the majority of mite but may not get them all or kill the eggs, the second one should get the survivors of the first treatment and any eggs that have survived and hatched, the third is really just preventative maintenance but well worth doing to catch any young ones the have hatched from eggs that survived he second, Spray everything not just the plants everything! I cannot emphasise enough, everything! EVRYTHING even the ceiling and it you are using tent remember to do behind the flaps where the seams for the zips are.
I bought a steamer to get into those flaps, it only needs on pregnant female to survive and you will have to go through it all again.
Another method which will curb insect mould and fungi is UV butt you need to know what you are doing. Adding UV lighting benefits in several ways.
A) it stimulates the UV-B resistance 8, a UV B sensing protein. By stimulating this protein the plants can produce more resin and up to 33% more THC
B) kills moulds, spider mites, fungus knat etc
"... for cannabis and other horticulture. 34% UVB / 66% UVA, designed for 2 to 4 hours a day. Guaranteed to increase terpenes, THC and other compounds, and guaranteed to kill powdery mildew and insects when used as directed."
https://www.solacure.com/4pack.html
the stuff I have, but have not used it just yet (fingers crossed I won't need to) is DYNAMEC which contains abamectin,
Approved professional insecticide / acaricide labelled for control of two spotted spider mite, leafminer and western flower thrips.
www.fargro.co.uk