When bailing on holidays here's what I do
I raise the air pump above the tank to stop back flow ( I don't trust a check valve for 2 weeks)
I stick the lights onto a timer switch.
I do a large water change beforehand
I place portions of food into individual baggies for each feed, one to be dropped in each time, with clear instructions that if one is missed not to give 2 at a time.
Service the impeller in your pumps before you go to
I'd leave a spare heater, switched off in the tank & get my "sitter" to check the temp when feeding them. if it had dropped hugely to plug in the other heater and plug out the original.
Pray to what ever god pleases you.....
If you cant get someone to feed them, auto feeders are cheap as chips online these days...
as for powercuts, a computer ups backup might sort you out for the time periods it was missing, ask your friendly local IT worker can you borrow one for the period you'll be away
