First grow, think i have bad mold problems :(

Need help, suggestions/comments would really be appreciated, pretty sure its mold/mildew. Pictures below. First grow, 23 plants from clones, currently nearly 5 weeks into flowering. Ive had problems with high humidity for a while, up until a couple of weeks ago it was sitting at about 90-100% with condensation for about half the day, over the course of a few weeks. i have managed to get that reduced a bit so things are slightly better, but cant fully fix it until these plants are harvested/space cleared in the room to change things around, because they are just too big so no space to move in there. Here's the form details:

E-indoor or outdoor---indoor (but in a wooden garden shed, so slightly more exposed than in a house)
E-soil, soilless, coco, aero, or hydroponic---soil
E-specific medium
CSL-Soil type/brand---BioBizz All-Mix BioBizz All-Mix Soil 50 Litres - Hydrohobby Hydroponics UK
HCL-Hydro/aero/soilless system type
SCL-Anything you have added to the soil---Nothing
SCLR-Soil or slab runoff pH
E-Water source---tap water
E-Source water pH---7.5ish
HRT-Source water EC (if hydro)
E-Age of plant---clones planted 8 weeks ago, flowering for 4.5 weeks
E-Type of fertilizer---Canna Terra Flores, Cannazym, Canna PH down pro
E-Rate of application---Included with every watering from pump + irrigation reservoir, once per day
E-Lighting source and distance from plant---2 x 600w HPS, currently about 50cm from top of central plants
E-Air temperature---day (lights off) 18c, night (lights on) 26c
HD-Reservoir temperature
E-Air % Relative humidity---day about 90%, night about 70%
E-Lighting schedule---12/12, on from 9pm until 9am
E-Type of ventilation your room has---passive intake, filter + extractor fan, 2 x circulation fans
TR-Did you pre-soak your media in pH corrected solution?

Most plants are about 1m+ height and look ok-ish with a couple of exceptions, like the highest leaves were probably getting too close to the lights, which i think explains some of the "warping" in a couple of the photos? But i've raised the lights a bit now. Because of the high humidity problem ive had mold forming in a far/seperate part of the room and seems like on the leaves, maybe some buds as well. the 100%/condensation problem is better now, but i know its still too high. The mold in the rest of the room has been killed with mold killer/bleach and not reformedand ive been spraying as many of the plants as i can get to with Cannacure, but think i might need somethng stronger so i can hopefully get to the point of harvesting without losing them. here's a bunch of pics, some are a bit shit though, but if you look at the leaves etc you can see what im talking about

[attachment=o278831][attachment=o278832][attachment=o278833][attachment=o278834][attachment=o278835]

Few more photos

[attachment=o278836][attachment=o278837][attachment=o278838][attachment=o278839][attachment=o278840]

Well that sucks....

Mold and mildew are products of not enough air flow.... Might want to get yourself a bigger extraction fan and instead of a passive intake, get an actual fan/blower to push new fresh air in....

And at the same time, if you have them outside in a garden shed, and surrounding humidity is 100%, your probs will probably persist.... Not only that, a majority of your larger buds are going to suffer from bud rot if humidity isn't controlled as of yesterday....

I feel for ya....

CGI::::::

Forgot to mention, airflow has always been a bit of a problem. The extractor is definitely sucking a decent amount of air though when i have checked it by removing the tubing from the filter. However when checking the ouside of the filter i cant really feel much suction at all. i was hoping i could improve this after harvest. So what could be done? A dehumidifier i suppose?