Thanks for all the suggestions.
fishscale- I think you know my inlaws, lol.
I think I have them trained on the food. They think they are giving the full amount, but I really start them at 1/4 (1/2 as much 1/2 as often as I normally feed) knowing they overfeed.
An autofeeder might be nice, but I didn't think this through too well as I was busy tinkering trying to get everything balanced well and don't have a lot of time before I leave to order something. I may run to one of the better LFS and see if there is anything that might make things easier in terms of dosing or feeding.
If I'm feeling lucky, I may go ahead and mix some dilute liquid fert solutions in small individual containers that I can label with dates. Then, if I get a lot of blank stares, I'm going to toss them and cross my fingers and rely on the root tabs and fish waste to get me through.
I'm going to be gone ~3 weeks. It ought to be interesting when I get back. Somehow, I see an algae battle and a lot of water changes in my future.
Last time I went away this long, my reef tank was filled with floating anemones and stinking fish when I came home. No more salt in my future, vacations were too stressful. This is the first test on the planted tank, I hope it fares better.
75g 3 T8s 2x OD, XP3, pres. CO2,