I have been fighting high Phosphate and Nitrates for some time. I've done lots of water changes, carbon dosing, and GFO. The problems with all of them it can put your tank on a roller coaster. I now doing Cheato and it is helping a lot (I think all reefer should do cheato). My question is with weekly water changes and cheato my numbers are now good, not great. Phosphate .05-.09. Nitrate 10-20. I'm going on Vacation for 15 days without any water changes. CAN I and SHOULD I keep the lights on my refugium 24/7 to help me numbers. Thank you