Bending the screen backwards is fine. It means the bubbles are hitting the screen.
Ordered a Marina S20 from Amazon, picked up a sheet of screen from the yardage/craft store, looking forward to adding it onto my 29gal sump, between the H1 fluidized bed and the return pumps. It's on a just cycled 100gal display tank I'm hoping to keep nitrates well below 5ppm and keep Discus with fewer water changes. The HOB is scheduled for delivery next Tues. I plan to post pics when I do the install. Thanks for the inspiration!
Kerry made a great suggestion also and it has room for a small led set up on the back between the tank and the filter. I think he said there is 1 1/4" between the filter and tank....
I have this on a 10G tank so I only need one side for the amount of feeding I do.
Thanks for the suggestion though. A reflective coating would work for a little bit until the algae grew and blocked the light...
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