Welcome to Aquatic Quotient! We hope you have found AQ to be useful and informative. Membership on AQ is FREE. If you have not already done so, register and join our community of Aquarium addicts. If you get blocked as a "spammer" while registering please come back to this page and read this post. If you have already registered but have forgotten your user name and/or password, use the Password Recovery Form.
I then started cemented 3 layers of waterproof cement with construction sand on each side... few days of curing time on each layer. rough sanding. as described above.