A dial for portion size, not just a timer.
Most feeders let you set when. The adjustable outlet here lets you set how much, which is the setting that actually decides whether a tank stays clean while you are away.
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Why you'll love it
Timers that only set the clock still tip a full drum each time. An adjustable outlet is what stops a week away turning into a week of overfeeding and an ammonia spike.
A mains feeder means an adapter matched to your country sitting above an open tank. Two AAA cells sidestep the whole question and last months.
Run it for two days before you travel and watch what actually falls in. Every automatic feeder needs calibrating once, and the time to find that out is not from a hotel.
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Timing is easy to get right and hard to get wrong. Portion is the opposite. A feeder set generously delivers the surplus every day, and by the end of a fortnight the tank has taken a substantial amount of food it never ate, all of which has broken down into ammonia and then nitrate.
An adjustable outlet lets you dial that down to what the fish clear in about two minutes. Set it, watch a full cycle, and adjust. It will feel like too little, and that is almost always correct, because the amount fish actually need is smaller than it appears when it is spread over a water surface.
Two AAA cells sidesteps the whole question of adapters, plug standards and finding a socket near the tank. It also means no mains cable running to the top of an aquarium, which is one fewer thing to route safely around water.
The compromise is remembering. Cells give little warning before they fail, and a feeder that stops on day four of a fortnight is worse than none at all because you have not arranged any alternative. Change them before every trip regardless of how much life you think is left.
A rotating drum handles flake better than a simple sliding hatch, because the rotation breaks up what has settled rather than relying on it falling. It still cannot cope with genuinely damp flake, which swells and packs against the outlet until nothing comes out.
Keep the lid closed so less humid air reaches the hopper, mount the unit clear of the water surface, and consider switching to pellet before a long absence. Pellet flows more reliably and holds together in damp air, which removes the single most common cause of a feeder failing mid holiday.
In the box
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The details
Empty the drum and wipe it dry rather than leaving food sitting in it for months. Stale food loses vitamin content and packs harder against the outlet, so a hopper filled in March and relied on in August is delivering something considerably worse than fresh.
Take the cells out for long storage so a leak cannot ruin the contacts, and check the clamp screw has not worked loose on the rim. Run the feeder for a few days before each trip rather than trusting a unit that has been in a cupboard since the last holiday.
Loved by real pet parents
Being able to set how much as well as how often is what made me choose this over a plain timer. Worth knowing the two AAA cells are not in the box, which I had not spotted and had to go hunting for. Since then it has dropped the same small amount twice a day without fail.
The display is clear and setting the modes is simple enough once you press through them. The screw clamp only grips a fairly thin lip and on my lid it needed packing out to sit square. Feeding itself has been consistent, so it is the mounting I would change.
Set it before a two week trip in June and it was still showing a full display when I got home. No adapter above the tank and no plug standard to worry about, which suited me. The portion was set narrow so nothing was left uneaten.
Flake is the awkward one for automatic feeders and this lets you close the gate to a sliver. Two small drops a day and the surface is clear within a minute. Nothing has clumped in the drum since February.
Mode, adjust and set is not the most obvious combination and I had the instruction sheet in my hand for a while. Once programmed it just runs, and the display tells you where you are. The portion control is genuinely useful on a small tank.
Ran it for two days before we went away and found the portion was double what the fish needed. Wound the outlet back, watched again, and left knowing exactly what would fall in. The dial makes that possible, a timer alone would not.
I was not keen on a mains lead sitting over the water and this runs on two AAA instead. Been going since October on the first set. It clamps to the rim and the rotating drum has handled both flake and small pellet.
Every previous trip ended with murky water because whoever fed them overdid it. Setting the portion small and the frequency at twice a day means the tank looks the same when we return as when we left. That is the entire reason to own one.
It does everything it claims and the drum turns smoothly each time. The display is tiny and I have to get close to read which mode I am in, which is only a problem while setting it. After that you leave it alone.
Good questions
No. It takes two AAA cells, and it is worth putting fresh ones in before a trip rather than trusting whatever is in there.
Flake is the food most likely to bridge in any feeder. Fill the drum no more than two thirds and run it for a couple of days before you rely on it.
The clamp needs an edge to grip and clearance below for food to fall. On a fully hooded tank use the tank side digital feeder instead, which hangs inside the glass.
No, two AAA cells are separate. Fit fresh ones before every trip rather than relying on whatever is in there, since they give very little warning before failing.
It can if the flake gets damp. The rotating drum handles flake better than a sliding hatch, but keeping the tank lid closed and switching to pellet before a long trip is the reliable fix.
It screw clamps to a rim or a lid, so it needs a flat edge to grip and clear space above. On a fully hooded tank a slim tank side feeder is the better option.
Last reviewed 30 August 2026
Advice
Fish barely need light at all. Plants do, algae wants it more, and the balance between those three is set by a timer.
6 min read