yo Welsh Wizzard im intrigued by your fan/filter setup. i have mine inverted to the way yours is i.e. i have the fan sucking air in from inside the tent going through a ducting tube to outside the tent through the carbon filter, so its pulling air from the vents at the tent bottom.Setup
I took mine apart and insulated the motor, also rewired it so it was'nt running flat out, the filter sat on the fan also cut some of the nosie out.
Both the wife and I sleep fine with it all on at night.
dude your really on top of your game i never pay that much attention to run off ph or amount i just flush it for a about 5 days alternating water and final phase ( advanced nutes bit like mr muscle drain unblocker for plant steriod abuse lol) n mine never tastes chemically. but im guessing as with all things dope growing the more effort you put in the greater reward. i think ill get a proper ph pen and start payin attentionMy plan is to water as norm on next watering with just 100ml of runoff.
Let her dry out then flush with ph 7 water untill runoff ph comes close to 7.
Leave her untill soil is bone dry then cut, so about 11 to 14 days depends on how quickly she uses up the water.
Clearing solution? What like Demestos lmao. There shouldent be any feed left in the soil doing it this way, never had a harsh smoke from last grow.