Originally Posted by jwhtan

ok let's say in a tank they are unable to hide and henceforth are subjected to compulsory tanning ... but this tanning has 95% of its UV wavelength being filtered out .... however, in an outdoor pond, subject to natural sunlight, the UV rays are direct and intense, w/o the glass blockage and henceforth, no filtering of the UV rays, so even if they hide, how much can they hide ?? cos UV rays penetrate thru water easily