I am going to pay for my MTS very soon. I am probably overthinking this some but humor me please since you people made me buy all they tanks with your enthusiastic fish keeper posts. This post will be a mini-novel most likely lol. Over the course of 25 days I am going to be out of town for ten days twice. I realize fish don't die quick, but starving my fish out for 20 days is not OK with me. I have 11 tanks and tub ponds so auto feeders would get a little spendy, though I wouldn't mind trying one on a few larger tanks since an overfeed isn't going to cause an immediate tragedy. So I guess my first question is which feeders to absolutely avoid? I know they have a bad REP. Here is the rest of my strategy..... -Very large WCs before I leave, WCs are not going to happen in my absence. I'll power feed the fish the day before WC. -I can get my daughter to come sometime near the middle of the ten day runs. Long trip so maybe day four, maybe day six. She can power feed (within reason), and dose my plants once. -75% of my fish are guppies, but they are expensive strains I have considerable time invested in. I will spread them out to minimize risk of a catastrophic loss. I will ensure all the guppy tanks are full of hornwort and guppy grass. Might leave the lights on 24-7. I know they will eat plants and algae. They could probably live a month without food if they had to but that is not responsible fish keeping IMO. -My 60G community tank is probably OK. It contains a large school of Lemon Tetras, a medium angel, half dozen cory cats, and some adolescent guppies. Other than the guppies I don't see them eating plants but maybe it is because they don't have to when I am feeding them regularly? I don't like the corys chances of getting any food at all, with such aggressive feeders. I think they are only going to eat algae wafers once when my daughter drops by. Perhaps I could just drop a cory in six different tanks? -My 10G GBR and Cardinal tank concerns me most. Their eventual home is a 20G I am getting some age on with Koi Swords and guppies. The GBR tank is so healthy now, even breeding. I hate to mess with something that isn't broke before two vacations. I think I will have my daughter scoop out a couple gallons of water and do a mini WC. It stays pretty clean but 10 days is pushing it. -5G guppy and swordtail fry tanks are a problem. Who knows how many fry will be in them but it is usually a lot and I do two 50%+ WCs per week to keep the water clean. I think they are going to my daughters house so I worry less. I don't like the thought of starving fry out and no WCs. Or I set up more planted temp tub ponds but it's starting to get stupid. I'm sure some of you travel so your ideas are welcomed.