Your first hydroponic setup should grow food, not frustration. The problem is that most guides throw six or seven system types at you without explaining which ones actually make sense when you have never grown anything without soil.
This guide ranks four hydroponics systems from easiest to hardest, with honest difficulty ratings, real costs, and specific recommendations for what to grow in each one. If you are new to hydroponics for beginners, start at the top of the list and work your way down as your confidence builds.
Quick Comparison: Hydroponic Systems Ranked by Difficulty
| System | Difficulty | Cost | Best for | Needs electricity? |
|---|---|---|---|---|
| AeroGarden / smart gardens | 1/5 | $30-90 | Herbs, small lettuce | Yes |
| Kratky method | 2/5 | $10-30 | Lettuce, herbs, peppers | No |
| Deep water culture (DWC) | 3/5 | $45-100 | Lettuce, tomatoes, peppers | Yes |
| NFT / ebb-and-flow | 4/5 | $150-400+ | Large-scale growing | Yes |
Every system on this list can grow food indoors year-round. The difference is how much setup, maintenance, and troubleshooting you want to handle. If you want to plug something in tonight and harvest basil next month, start with an AeroGarden. If you want to learn how hydroponics actually works and spend under $20 doing it, start with Kratky.
AeroGarden and Smart Gardens (Difficulty: 1/5)
Smart gardens are the training wheels of hydroponics. You fill the water tank, drop in a seed pod, plug it in, and the built-in LED lights and automated timers handle everything else. No nutrient mixing, no pH testing, no guessing about light schedules.
What You Get
The AeroGarden Harvest 2.0 is the most popular entry point. It holds six seed pods and fits on a kitchen counter. The retail price is $89.99, but AeroGarden runs frequent sales that drop it to $30 to $40. The Sprout model (three pods) sells for $40 to $60 and works well if you just want a few herbs. Both ship with a starter seed kit (usually basil, parsley, dill, and thyme), a bottle of liquid nutrients, and a grow dome to speed up germination.
We put the Harvest 2.0 through a full grow cycle in our AeroGarden review, where it produced harvestable basil in about three weeks. Other smart garden options like Click and Grow and Gardyn work on the same principle, with different pod capacities and price points.
Best For
Herbs. That is the sweet spot for smart gardens. Basil, mint, cilantro, parsley, and dill all thrive in these compact systems. You can grow small lettuce varieties too, though the limited pod spacing means you will not get large heads. Cherry tomatoes are technically possible in the taller Farm models, but expect slower results and more hands-on care than the system is really designed for.
The Trade-Off
Smart gardens teach you almost nothing about hydroponics. You will not learn to mix nutrients, adjust pH, or manage root health because the system handles all of that behind the scenes. They also use proprietary seed pods on some models, though AeroGarden sells “Grow Anything” pods for under $1 each that accept any seeds you want. If your goal is to actually understand hydroponic growing as a skill, skip ahead to Kratky.
Kratky Method (Difficulty: 2/5)
Kratky is where you actually start learning hydroponics, and it costs almost nothing to try. Named after B.A. Kratky at the University of Hawaii, this method uses a simple principle: suspend a plant’s roots in nutrient solution and let an air gap form naturally as the plant drinks. No pump, no electricity, no moving parts.
I run a Kratky setup at home, and it is genuinely the simplest hands-on hydroponic method available. You can get the full walkthrough in our Kratky method beginner’s guide, but here is the short version.
How It Works
Fill a container with nutrient solution. Place a net cup with a seedling in the lid so the roots touch the water. As the plant grows, it drinks the solution and an air gap forms between the water surface and the lid. That air gap gives the roots the oxygen they need. No air pump required.
The entire system is static. Once you set it up, you check on it occasionally and top off nutrients if the plant is a heavy feeder. Lettuce and herbs rarely need a refill before harvest.
What You Need
A food-safe container (mason jars for herbs, 5-gallon buckets for larger plants), net cups, a growing medium like clay pebbles or rockwool cubes, hydroponic nutrient solution, and a pH test kit. Total cost runs $10 to $30 if you already have containers around the house. The University of Florida IFAS extension published one of the best research-backed guides on the Kratky method, confirming that it works reliably for leafy greens and herbs with minimal effort.
Best For
Lettuce, herbs, and small peppers. Kratky is also a popular way to grow microgreens hydroponically. Larger fruiting plants like tomatoes can work but they push the method’s limits because they drink fast and may need solution refills before harvest. If you want to grow bigger plants reliably, deep water culture is the next step up.
Deep Water Culture (Difficulty: 3/5)
DWC is Kratky’s more capable sibling. The core idea is the same (roots suspended in nutrient solution), but DWC adds an air pump and airstone to keep the water oxygenated constantly. That single addition means roots never run short on oxygen, plants grow faster, and you can support larger, hungrier crops like tomatoes and peppers.
Our DWC hydroponics guide covers the full setup process step by step. Here is the quick version.
How It Works
A 5-gallon bucket holds nutrient solution. An air pump (the same type used in fish tanks) pushes air through tubing connected to an airstone sitting at the bottom of the bucket. The airstone creates bubbles that keep the water oxygenated around the clock. A net cup with your plant sits in the lid, roots dangling into the aerated solution.
Unlike Kratky, DWC requires electricity to run the air pump 24/7 and needs more regular monitoring. You will check pH and nutrient concentration weekly, topping off the reservoir as plants drink it down.
What You Need
A 5-gallon bucket, an aquarium air pump, airline tubing, an airstone, net cups, clay pebbles, hydroponic nutrients, a pH test kit, and an EC meter for tracking nutrient concentration. Pre-made DWC kits on Amazon and hydroponic retailers run $45 to $100. You can build one from parts for around $30 if you source the air pump separately. General Hydroponics pH Down is the most commonly used pH adjuster in DWC setups and costs about $10 for an 8 oz bottle that lasts months.
Best For
Everything Kratky can grow, plus larger plants. Tomatoes, peppers, cucumbers, and oversized herbs all perform well in DWC. If you plan to grow inside a grow tent, DWC pairs naturally with that setup because the air pump keeps roots healthy even in warm, enclosed spaces where oxygen levels in standing water would otherwise drop.
NFT and Ebb-and-Flow Systems (Difficulty: 4/5)
These are the systems you see in commercial hydroponic farms and YouTube builds with PVC pipes running along a wall. They work well and they scale efficiently, but they add complexity that most beginners do not need yet.
How They Work
Nutrient Film Technique (NFT) pumps a thin film of nutrient solution through a sloped channel. Plant roots sit in the flowing stream and absorb nutrients as the solution passes over them. Ebb-and-flow (also called flood-and-drain) periodically floods a grow tray with solution, then drains it back to a reservoir on a timer cycle. Both require a water pump, timer, tubing, and a separate reservoir tank.
The extra moving parts mean more points of failure. A pump failure in an NFT system can kill plants within hours because the thin root film dries out fast. Ebb-and-flow is more forgiving since the growing medium retains some moisture between flood cycles, but the flood-drain automation still needs to run reliably.
Who These Are For
Growers who have already run a DWC or Kratky system and want to scale up. NFT is efficient for growing large quantities of lettuce and herbs in vertical or horizontal channels. Ebb-and-flow handles mixed plant types well at medium scale. If you are reading this article as a complete beginner, bookmark these systems and come back after you have a few successful harvests behind you.
Hydroponic Herb Garden: The Most Popular Starting Point
Herbs are the reason most people try hydroponics in the first place. A hydroponic herb garden takes up less space than a cutting board, costs less than two months of buying fresh herbs at the grocery store, and produces year-round regardless of season or weather.
Any of the four systems above can grow herbs, but the best match depends on how involved you want to be:
- Fresh basil with zero effort? AeroGarden Harvest 2.0. Pods go in, lights turn on, you harvest in three to four weeks.
- Want to learn hydroponics while growing herbs? Kratky method with mason jars for $10 to $15. Basil, mint, and cilantro all grow well this way.
- Want faster growth and bigger yields? A DWC bucket for $45 to $60. Constant aeration pushes herbs to grow faster than passive methods.
The most popular herbs for hydroponic growing are basil (fastest visible results), mint (grows aggressively and does well in contained systems), cilantro, parsley, dill, and chives. All of these germinate quickly and tolerate the standard nutrient concentrations used in most hydroponic solutions without any special adjustments.
What to Grow in Your First Hydroponic Garden
Start with plants that are forgiving, fast-growing, and do not need pollination. Here is what works best at each system level:
| Plant | Days to harvest | Best system | Notes |
|---|---|---|---|
| Basil | 21-30 | Any | Fastest visible results, great confidence builder |
| Lettuce | 30-45 | Kratky, DWC | Butterhead and loose-leaf varieties work best |
| Spinach | 35-45 | Kratky, DWC | Prefers cooler temps, 60-70F ideal |
| Mint | 30-40 | Any | Grows fast, will take over if given room |
| Cherry tomatoes | 60-80 | DWC | Needs pollination (shake the flowers) and strong light |
| Peppers | 60-90 | DWC | Needs pollination too, but very productive once going |
Skip large fruiting plants (full-size tomatoes, melons, squash) for your first grow. They need intense lighting, careful nutrient management, and physical support structures that add cost and complexity. Work up to them once you are comfortable managing pH and nutrient levels on simpler crops.
How to Pick the Right System
Forget about which system is “best” in the abstract. The right hydroponics system depends on three things.
Your budget. Under $30, go Kratky. Between $50 and $100, a DWC kit or AeroGarden Harvest gives you solid options. Over $100 opens up multi-bucket DWC setups or a basic NFT channel.
Your time. Smart gardens need about five minutes a week: refill water, add nutrients when the indicator light comes on. Kratky needs a quick check every few days. DWC needs weekly pH and EC monitoring plus topping off the reservoir. NFT and ebb-and-flow need daily attention while you are still learning the system.
Your goal. If you want herbs on the counter with no learning curve, a smart garden gets you there. If you want to understand hydroponics as a skill you can build on, start with Kratky and move to DWC when you are ready for more. Our hydroponics 101 guide covers the fundamentals in depth if you want the full picture before choosing a system.
Frequently Asked Questions
What Is the Easiest Hydroponic System for Beginners?
An AeroGarden or similar smart garden is the easiest option because it automates lighting, nutrient delivery, and timing. If you want a hands-on system that is still beginner-friendly, the Kratky method requires no electricity and costs under $30 to set up with basic household containers.
How Much Does a Hydroponic System Cost?
Entry costs range from $10 for a DIY Kratky jar to $90 for an AeroGarden Harvest 2.0. A DWC kit runs $45 to $100. NFT and ebb-and-flow systems start around $150 and go up from there. Ongoing costs for nutrients, pH supplies, and replacement pods add $5 to $15 per month depending on what you grow.
What Plants Grow Best in Hydroponics?
Leafy greens like lettuce, spinach, and kale along with herbs like basil, mint, and cilantro are the fastest and most reliable crops for beginners. Cherry tomatoes and peppers work well in DWC systems with strong lighting. Avoid large fruiting plants until you are comfortable managing nutrient levels and pH.
Do Hydroponic Systems Use a Lot of Electricity?
Smart gardens and DWC air pumps use about the same power as a small desk lamp. Kratky uses no electricity at all. The main energy cost in any indoor setup is the grow light, which draws 20 to 150 watts depending on size. For a small countertop herb garden, expect $2 to $5 extra on your monthly power bill.
Can I Build a Hydroponic System Myself?
Yes. Kratky and DWC are the two most popular DIY hydroponic builds. A Kratky system needs a container, net cups, and nutrient solution. A DWC build adds an aquarium air pump and airstone. Total cost for either DIY approach runs $10 to $40. Our Kratky guide and DWC guide both walk through the build process step by step.