It's fungus. Nothing to worry about, quite natural actually. I believe snails or algae eaters go after it. Or you could remove it when you do a water change.
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Missed the dwarf cichlid part. Don't think this tank is large enough, especially for a GBR.
Yea the apisto is temporary, he got his butt kicked in my 36gal and will be traded when his tail heals up. You don't think a 5g planted is ok 1 GBR?
Yeah scarlet badis are nice in a small tank. I think a peacock gudgeon may work.
Oh yah! Forgot about those little dudes, I'd think they'd do ok in there.
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Just got back from petco, they have fluval LEDs on clearance. Got an 18" Eco bright and a 46" full spectrum for half off!
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I have a Fluval 24" Aquatic Life & Plant LED on a 26g Bow Front. It's a nice fixture. Definitely puts out a pleasant warm color temp. It's full spectrum with dedicated red diodes that overall, boast a high CRI (color rendering index).
Is this the 48" one you got?
I believe they're on clearance, most of Fluval's line, because they're ramping up to release a new line of them. I think the new ones will be dimmable.
Still, nice fixtures, IMO.