A lot of people do 24/7 light cycles for macros. I have experienced great results with my 24/7 light cycle. I have very little nutrients in the water, almost perfect water condtions and I have to trim about 1-2 small bags every few weeks. My cheato is very green and houses pods and baby snails.
Try both, and see what gives you better results and let us know. If you need anything else, dont hesitate to PM me.