I just picked up a 9" pie pan at Goodwill and would like to use it as a sandbox in one of the corners of my tank. My preference would be towards the back but if I do this, it will either be underneath the intake for my AC
30 filter or under the output / outflow of my AC
50 filter. It won't be directly beneath the filter but those are roughly my options. Please let me know if you think neither would be good.
Also, a pet store had 5lb bags of sand on sale. It says nothing about being for marine tanks, it's just a bag of sand. I'm gonna spend the next hour or so rinsing it but do you think it would be okay?
Thanks, from me & the cories!