Seems no one wants to share advice on this topic in another forum, so I will post it here and hopefully have better results getting some helpful suggestions. I'm debating whether to reduce the lighting period in my 10g to around 5-6 hours a day, or just shut the lights off completely. We'll be out of the country for 2 weeks, and though I trust my dad to feed the fish in the 125g, he is clueless when it comes to plants and ferts, and I would rather not have him mess with the 10g at all, not even with instructions and measured quantities, and I don't want to have to look into something for autodosing. I'm not too worried about the plants in the 125... it's mostly hygro, watersprite, wisteria, a few crypts, and some ambulia. I'm sure I'll have algae in there, but I doubt it will be much more than what is in there now. As far as the 10g goes though, I dose NPK and excel daily. Lights are on 10 hours/day.... only minor GSA on the glass. The plants are all healthy.. ambulia, ludwigia brevipes, repens and glandulosa, downoi, blyxa, dwarf sag, and some moss. I removed the DIY co2 recently because of some issues with the shrimp, but that's a different story. Anyway.... would it be better to just drop the lighting to about 5-6 hours a day or it would be horrible for the plants to cut the light altogether? They do get a little daylight from the sliding glass door across the living room, but no direct sunlight. I know the cherry shrimp will be fine, but would rather not have a total loss as far as plants go. I just read all these horror stories about tanks gone awry during vacation and dread coming home to a huge algae bloom. Suggestions are appreciated.