Im looking for ways to darken my tank for my Oxydoras niger and three eels. i have white gravel witch i know brights up the tank ... im gonna remove. i have a black back ground but my fish still dont like to come out, i know there noctornal but i know a lot of people thats cats come out just when they feed them. not mine the lights have to be off and it has to be like 1030 at night. any help?
