If your lights are so bright, your Oscars want their own set of RayBan's....here's a cheap & simple fix:
Use different grades of stick-on auto window tint on your glass top to achieve the amount of light reduction you want.
Like most 3' or longer tank, the lid of our 90g comes as 2 pieces.
I tinted the back halves of both pieces.
I've created a "heavy shadow" effect using Full Limo tint (90%) on the inside & outside, so Hoover's hideout (large bell deco) is shaded all the time.
The other half of the lid, I only put 2 small leaf shaped pieces on the underside to make a "sun dappled" look.
I also have a strip of Light Smoke (30%) that I taped at the back edge of that half of the lid, but left unattached at the front edge so I can roll it on or off.....
it works great to give that "cloudy day" or "late evening" feel to the tank.
Both Hoover, our sailfin pleco & Cheetah, our Bichir seem to appreciate it.
HINT- I only do the back sections of the lid - the non-opening part. That way if ya need the full brilliance, you can simply move your light hood forward & TADAAAAAAA! It's high noon in tankville.
Yes, it's me cross-posting again, but only trying to help.......




