Hey bro, thanks for looking through my log!
With regards to the weight of the light fixture, it's probably only a kilogram or 2 but the only issue is that I can't actually have it any higher to the roof of the box due to the power cable coming out of the top of the light.
I don't know your location, but you may want to search around on some electronic, electrical websites for a angled plug or 90 degree plug for your light. It could give you a few more inches of growing space.
Here's a pic:
View attachment 3008909
Cork sheets are a great idea, maybe for next time I start up but I think the majority of the noise is from the exhaust fan so I probably should have invested in a voltage/speed controller. Thanks for your advice mate!
RTV or silicone is another option for mounting your fan, also you could make a rubber gasket to go between the fan and the box. I know everything on the submarines were mounted to rubber feet for making them quieter.
So my plant is now 25 days old (just ticked over midnight here) and I'm wondering whether I'd be good to change to 12/12? It's almost reached the screen and I'd predict it to make it there in the next 18-36hrs of light. I'd post some pictures of it but it's currently sleeping so kinda droopy and doesn't look super awesome like when it's got the LED on it. I figure with the 8-12 weeks it'll take to flower that I could probably jump to 12/12 and still comfortably fill the screen (which is 34x42cm for reference).
Thanks guys!