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The 17-inch light height on the LetPot LPH-Air buy on Amazon is printed clearly on both the product page and the Amazon listing. The actual measurement is 12.75 to 13 inches. If you were planning to grow dill, mature basil, or anything that climbs past 12 inches, that gap matters before you buy, not after. This LetPot LPH-Air vs iDOO hydroponic garden comparison starts there, because that spec discrepancy shapes everything else.
The iDOO 12-Pod check current price isn’t innocent either. Its listed maximum plant height is 11.02 inches. So both systems top out somewhere in the 12-to-13-inch zone, regardless of what the marketing copy implies, and the LetPot’s spec sheet is frankly less honest about that than iDOO’s.
That’s the starting point. Everything else in this comparison flows from understanding that both of these are compact herb and greens gardens, and you should pick between them based on app control, pump reliability, and pod economics rather than imagined height clearance for tomatoes.
Quick Answer: For herbs and lettuce, both work. The LetPot LPH-Air is worth the extra $10-20 over the iDOO 12-pod if you want app-controlled light scheduling and don’t want to reprogram manually after every power outage. The iDOO gives you 2 extra pods and a slightly lower price, but the standard model has no WiFi, loses its schedule on power cuts, and has a documented pump failure pattern around the 3-6 month mark. If you’re bringing your own heirloom seeds, both ship without them, but LetPot’s sponges are easier to DIY-seed.
LETPOT LPH-Air Hydroponics Growing System Kits, APP & ...
4-liter hydroponic system with 24W LED and app control, ideal for growing herbs and leafy greens indoors year-round
~$59.39
iDOO Hydroponics Growing System Kit 12Pods, Indoor ...
12-pod indoor garden with 22W LED and two growth modes, grows herbs and vegetables 20% faster than soil with 4.5L water tank capacity
~$79.98
LETPOT LPH-SE Hydroponics Growing System, 12 Pods ...
12-pod hydroponic system with 24W full-spectrum LED and app control, ideal for herbs and leafy greens with 3-week water capacity.
~$119.97
iDOO WiFi Hydroponics Growing System, Indoor ...
8-pod WiFi-controlled hydroponic system with adjustable 13.6-inch grow light and dual plant modes, ideal for indoor kitchen herbs and vegetables.
Light Output and Real Height
Both systems run 24W (LetPot Air) and 22-23W (iDOO), which puts them in the same wattage class. The difference the LetPot has over the AeroGarden Harvest line is more meaningful than the difference between these two, the Harvest runs 15-20W for only 6 pods, while both the Air and iDOO give you more pods at similar or higher wattage and comparable price points.
PPFD at canopy on the iDOO 12-pod lands around 300-350 µmol/m²/s at typical operating distance, not a number iDOO publishes, but consistent with what a 22W LED panel at that geometry produces. The LetPot Air runs a similar 24W draw with a comparable LED configuration, so expect it to land in the same range. Neither system is going to fruit tomatoes reliably. Herbs and leafy greens are the actual use case.
The light pole on the LetPot Air extends in segments to its 12.75-to-13-inch real maximum. There’s a dim/full brightness toggle and separate veg/flowering modes. The iDOO has the same two-mode setup, listed as 22W total. One practical difference: the LetPot’s light fully detaches from the grow bowl, which makes cleaning noticeably easier.
For what it’s worth, bok choy to harvest in 43 days is a confirmed result with the LetPot Air, and I’ve written about why bok choy is one of the better non-herb crops for compact pod systems . Both systems can handle it at that height range.
Pump Design and Long-Term Reliability
This is where I won’t soften things for iDOO. The pump failure pattern on the 12-pod standard model is well-documented, clustering around the 3-to-6-month mark. The failure mode is almost always the same: root debris and nutrient sediment get into the impeller and clog it. The pump can often be cleaned and restarted, but the need to do it repeatedly suggests it’s a design limitation rather than just bad luck.
The iDOO WiFi model see on Amazon has the same failure pattern. The common complaint is that the pump stops around 3 months, right after the warranty window. That’s a recurring issue, not an outlier.
The LetPot Air’s pump is positioned off-center in the reservoir, which looks odd at first glance. In practice, plants across all 10 pods showed even growth through a full 43-day bok choy grow with no root rot and no pump issues. The off-center position doesn’t seem to cause circulation problems in real use.
Neither system has easily replaceable pump parts available at retail the way AeroGarden does, so if either pump dies outside the return window, you’re looking at a full replacement or a warranty claim. The LetPot’s record here is cleaner right now, but it’s a younger product with fewer long-term data points than the iDOO. iDOO units can run for multiple years with manual attention. The pump issue is real but not a death sentence if you stay on top of reservoir maintenance. I track my own water change schedule in this guide on how often to change water in a hydroponic garden , more frequent changes mean less sediment buildup, which directly reduces clog risk.
The iDOO does include a small fan that circulates air over the canopy, which helps with stem strength. The LetPot Air doesn’t have one. For herb growers who want that airflow benefit without buying a separate desk fan, iDOO has the edge there.
App Control: Who Actually Needs It
The standard iDOO 12-pod has no WiFi. No app. You set the timer physically and it runs. When the power goes out and comes back, the light schedule resets. You have to reprogram it manually. For most apartments, this happens occasionally, enough to be annoying.
The LetPot Air connects to the LetPot app via WiFi in under 30 seconds, and the schedule survives power outages because the settings live in the app, not the device. You can set exact on/off times, duration, veg or flowering mode, and brightness across a 0-to-24-hour window. There’s also a grow-day tracker that logs how long each plant has been running, which is more useful than it sounds once you’re juggling cilantro timing alongside basil.
The gap the app doesn’t close: no push notifications for nutrient reminders. AeroGarden’s app sends you a reminder when it’s time to dose. LetPot doesn’t. You’re still eyeballing the reservoir and keeping your own schedule. That’s not a dealbreaker, but it’s worth knowing if you were expecting a fully automated nutrient management system.
But the iDOO WiFi version adds app connectivity at a higher price point, narrowing the gap with the LetPot Air. At that point the LetPot becomes the better deal: same or lower price than the iDOO WiFi, more pods per watt in some configurations, and a cleaner app implementation. The LetPot app is well-designed for a budget system. The iDOO WiFi app works but tends to get less consistent marks for interface quality.
If you’re running multiple units or managing grow schedules for different plant species with different light hour needs, the LetPot app earns its place. For a single herb garden where you set it once and forget it, the iDOO’s manual timer is fine. I wrote more about why the default light schedule is usually wrong for herbs regardless of which system you use , that article explains why having granular app control matters more once you’re trying to prevent bolting.
Pod Spacing, Seed Compatibility, and Cleaning
The iDOO has 12 pods versus 10 on the LetPot Air. On paper, more pods sounds better. In practice, at 12-to-13-inch light height with a footprint that isn’t dramatically wider, 12 pods means faster crowding once herbs fill in. The LetPot’s 10-pod layout gives each plant a bit more horizontal breathing room, which matters when you’re growing something bushy like basil.
Neither system includes seeds. The LetPot ships with grow baskets, sponges, humidity domes, hole covers, trellis poles, and an A/B nutrient packet. The iDOO includes a similar kit. For anyone coming from outdoor gardening with their own heirloom seed collection, this is a feature rather than a missing component. You’re not locked into a starter kit’s variety selection.
One real difference: LetPot grow baskets drop loosely into the deck openings with no snap-fit. They don’t click in like AeroGarden baskets do. If you tilt the unit carelessly when moving it, plants can shift.
AeroGarden’s locking basket design is better for portability, and it’s a small but real annoyance with the LetPot.
The LetPot Air’s water fill opening is positioned at the right edge and is about the same diameter as the pod holes, which makes refilling more awkward than a centered fill port. You basically need a small pitcher or squeeze bottle to avoid splashing. The iDOO has a similar side-window design for checking water level. Neither is as convenient as center-fill systems.
Cleaning the LetPot Air is simple, the light detaches, the bowl soaks in bleach solution, and the pump and filters soak separately in cleaning vinegar. Reassembly is simple. The iDOO is comparably cleanable. Both get a passing grade here. For the detailed maintenance routine that keeps either system from growing algae, I keep a full guide here .
Price and the Upgrade Path
The LetPot Air runs around $59-70 at normal pricing, with frequent sales. The iDOO 12-pod standard lands between $60-80. They’re close enough that price alone shouldn’t decide this.
The LetPot LPH-SE check price on Amazon is the natural step up. Same 24W LED, 12 pods, but the light arm extends to 30 inches, more than double the Air’s real-world clearance. That’s a different category of plant entirely.
The LPH-SE handles spinach, amaranth, and red romaine well at that height range, the extra clearance is what makes the difference. The reservoir is 5.5 liters instead of 4, it has WiFi and app connectivity, and the stainless steel exterior feels noticeably less plasticky. Worth noting: the app disconnects almost daily on some units, requiring a manual power cycle to reconnect. Good hardware; frustrating software.
If you’re planning to grow anything with more vertical ambition than compact herbs, the LPH-SE is closer to the right tool.
And for the standard comparison, LetPot Air vs iDOO 12-pod, the price difference is small enough that I’d let pump reliability and app preference drive the call. More detail on the iDOO and LetPot cost-per-pod math lives here , which matters more over multiple grow cycles than the upfront unit price.
🏆 Best Value Overall
LETPOT LPH-Air Hydroponics Growing System Kits, APP & ...
4-liter hydroponic system with 24W LED and app control, ideal for growing herbs and leafy greens indoors year-round
Check Price on AmazonThis article is part of my Countertop Hydroponic Systems: Complete Comparison , a complete resource for countertop hydroponic growing.
Frequently Asked Questions
Does the LetPot LPH-Air actually reach 17 inches of light height?
No. Both the LetPot website and Amazon listing claim 17 inches, but the actual measurement sits at 12.75 to 13 inches above the grow deck. It’s a meaningful misrepresentation, especially if you were planning to grow taller crops. If you need real height, the LetPot LPH-SE extends to 30 inches and is the right call for anything beyond compact herbs and greens.
Does the iDOO hydroponic garden have an app?
The standard 12-pod model doesn’t. No WiFi, no app, and the light schedule resets after a power outage. iDOO does make a WiFi version that connects to an app, but it costs more and has a smaller pod count (8 pods instead of 12). If app control matters to you, the LetPot Air gives you more pods at a comparable or lower price than the iDOO WiFi model.
How long does the iDOO pump last?
The documented failure point is around 3 to 6 months. The cause is almost always clogging from root debris and nutrient sediment in the impeller. You can often clean and restart the pump, but repeated clogging suggests the design is vulnerable to it. More frequent reservoir changes and keeping root systems trimmed back from the pump intake both help. It’s not guaranteed to fail, but it’s the most common complaint across long-term iDOO owners.
Which is better for experienced gardeners bringing their own seeds?
Both ship without seeds, which is useful if you have heirloom varieties you want to grow. LetPot’s standard square sponges are slightly easier to DIY-seed with a dibber or chopstick because they sit flat and open at the top. iDOO’s sponges work fine too. Neither system locks you into branded pod kits for ongoing grows.
Is the LetPot app actually worth using, or is it just a gimmick?
For single-unit herb growers who set the timer once, the app is a convenience feature you could live without. For anyone running two units, growing species that bolt at different light durations, or traveling regularly, it earns its keep. The power-outage schedule retention alone is worth it in apartments with unreliable power. The one gap is no push reminders for nutrients, so you’re still managing that manually.
Are home hydroponic gardens worth it for herbs specifically?
For fresh herbs, yes, with realistic expectations. A single grocery bunch of basil or cilantro costs $3-4 and goes bad within a week. A hydroponic system growing a healthy basil plant can supply continuous harvests for months from the same plant. The cost math works out well if you actually cook with fresh herbs regularly. It doesn’t replace grocery shopping broadly, but for herbs specifically, the payoff is real. I’ve kept one basil plant going for over four months on my AeroGarden with consistent harvests.
So: get the LetPot Air if app-controlled light scheduling and better pump reliability matter to you. Get the iDOO 12-pod standard if you want two extra pods and a lower entry price and don’t mind the manual attention. Avoid the iDOO WiFi version, at its price point the LetPot Air is a better deal with a more capable app. And if you’re serious about height for anything beyond compact greens, step up to the LPH-SE and skip this whole debate, just know the app has a daily disconnect problem that you’ll be power-cycling your way through.