thanks those questions im new to all of this but trying, i believe its a plate and yes it did come from an open tank its been closed for almost a day and a half slowly i can see it wants to open up but struggling. one more question paul i have a bio cube 29gal tank what would you recommend for how long my black light and other bulbs to be on through out the day 24 hour period? thank you so much for the info if you can get back to me
Dan