The only problem is, I was going to poke holes in the mesh top and use zip ties; however, I am worried about stressing the mesh and causing it to bend and fall out. I also was told to use 3M tape... but taping a light fixture scares the bajeezus out of me. If it falls and hurts my baby I will cry...
Hello! I have a 24” and I used command heavy duty strips, works great! I also was terrified to use them, so I am constantly making sure it’s still snug! And it is!!
I was also pretty nervous about mounting the fixture inside the tank, so I got some heavy duty velcro strips rated for a far higher weight than a li'l old lighting fixture and used those to affix the light to the back wall of the hab. So far, so good - I do spot checks to make sure the adhesive is still good and adhered, but three months in and it hasn't budged a bit.
I was also pretty nervous about mounting the fixture inside the tank, so I got some heavy duty velcro strips rated for a far higher weight than a li'l old lighting fixture and used those to affix the light to the back wall of the hab. So far, so good - I do spot checks to make sure the adhesive is still good and adhered, but three months in and it hasn't budged a bit.
I like the 3M command strips for removability, but I agree - the adhesive on velcro strips tends to be industrial strength, and if the velcro is also heavy-duty, you shouldbe all good. You could also use a combination of either command strips or velcro, sbd a bit of picture or other thin, strong wire for backup/peace of mind. :0)