It is on the bottom of the page on the left side. The Rules are important as sometimes they say things like
Attachments - Off
[IMG] - OFF

So you can't attach a file, and you can't embed images in the post. But in your case, just attachments are off. Admins toggle the on off things like this. HTML is always off by the way (can lead to viruses in picture files and such).
CannaGeek Reviewed by CannaGeek on . First Indoor Grow - Aeroponics/T5 Fluorescents Howdy all, My buddy is new to indoor gardening and this is his first attempt at hydroponics. The Brick around town is beginning to get on our nerves and we figured growing our own would remedy that. Budget is tight, so everything is non-prefabricated except for the lighting fixture. Frame is all 1x4 pine $30 Tubs are both rubbermaid I believe. $20 Reservoir is "plastic tub" from Lowes 30 Gal $15 PVC and nozzles from Ace Rating: 5