| | Re: exo terra 90cm for crypts/anubias emersed
that would be a good experiment, to see what the effect of light intensity has crypt growth rate. You don't have to buy a bunch of bulbs to test it. You can raise and lower the lights and get some neutral shade cloth to go to even lower intensities.
I know many of the crypts I have are showing a bronzish cast, and my rosenervig is not showing the characteristic pattern, I suspect due to too much light.