Rusty spots

I think inspireme could be right on this one. I looked through your diary and you leaves have spent most the time sitting on the damp soil, 80%Rh is way to high for all them weeks. You have dark leaves that also suggest N build up. Next grow try and get your conditions better and keep them leaves from sitting on the soil and that won't happen. It's been building up from when you started training.

Hey mate, She looks a little heavy on nitrogen. I also think you you may have rust fungus. The main cause for Rust is night time temperatures being too cold with a high humidity. Rust fungus produce asexual spores which are spread like wildfire by water, wind or bugs. Pathogenic fungi are biotrophs meaning they take the nutrients they need directly from the plants cell tissue. Once the spores settle on a plant hydrophobic interactions are formed on the plants cell surface through a process that isn’t fully understood yet the Rust fungus produces a sticky like substances which attaches the spore to the plant. Once attached to a host plant the Rust fungus spores germinate by growing a “germ tube” eventually reaching a stoma, once inside the hyphae tips flatten out to lock into cell walls. A “peg” then grows into the plants mesophyll cells its creates specialised tips “Haustorium”, they spread around cells without affecting the membranes. The plants membranes invaginate around the haustorial forming a open space. Iron & phosphrous rich neck bands connect the plant and fungi known as apoplast which prevent nutrients from reaching the plants cells, its grows until its produces new spores which is repeated every 10-14 days. Prevention. Currently there are 2 or 3 types of Pathogenic fungi which are resistant to sterilization. (Bleach washes, Sulphur Candles, Soapy washes etc.). One of the best preventions you can take in your grow room is to have proper temperature, ventilation and always disinfect your room after every grow. Spraying plants 1 or 2 a week with some kind of fungicide (I prefer Sulphur based) is also great since it reduces the changes of spore germination. Cure Its extremely hard to get rid of once you got it most fungicides with help slow it down but not kill it completely. At this time the only way to cure a plant once Rust fungi has gotten hold is with Systemic fungicide which runs through the plants cells killing any fungi it comes into contact with, which also can be bad since it will kill helpful fungi as well. Any infected plant material should be burnt or put in a garbage bin outside of the home as composting and leaving it a normal garbage will just spread the infection more. If you think you noticed Rust fungi act right away because the more time it has to establish the harder it is to get rid of